Desserts
This Rice Krispie treats recipe with 12 oz marshmallows delivers the classic no-bake magic in just 10 minutes—no oven required. The secret lies in the perfect ratio of buttery marshmallows to crispy cereal, creating that signature gooey, pillowy texture that melts in your mouth. I've perfected this version after years of testing, ensuring every batch turns out light, airy, and irresistibly sweet.
The beauty of this recipe is its simplicity: just three core ingredients—marshmallows, butter, and cereal—combined in a single pot over low heat. The key technique is stirring constantly until the marshmallows melt completely and the mixture reaches that ideal, stretchy consistency.
This ensures your treats won't be too sticky or too dry, striking the perfect balance every time.
What you'll end up with is a pan of golden, crisp-edged Rice Krispie treats that cut cleanly and hold their shape without crumbling. The buttery marshmallow base creates pockets of gooey goodness between each crispy cereal piece, delivering that nostalgic taste of childhood in every bite.
For extra flair, try adding chocolate drizzle or white chocolate chips to the melted marshmallow mixture before pouring. These treats are perfect for parties, potlucks, or satisfying a sweet craving in minutes. Let's get started!
Ingredients for rice krispie treats recipe 12 oz marshmallows
Three core ingredients transform into nostalgic, pillowy treats—no oven needed.
| Ingredient | Amount | Notes |
|---|---|---|
| Mini Marshmallows 🍫 | 12 oz | Standard size for perfect texture |
| Unsalted Butter 🧈 | 6 tbsp | Cold, cubed for even melting |
| Rice Krispies Cereal 🍚 | 6 cups | Original flavor preferred |
| Vanilla Extract 🌿 | ½ tsp | Pure, high-quality extract |
| Salt 🧂 | ¼ tsp | Fine sea salt preferred |
| Nonstick Cooking Spray 💦 | 1 spray | For pan coating |
| Aluminum Foil 📄 | 1 sheet | For easy cutting and serving |
| Chocolate Chips 🍫 | ½ cup | Semi-sweet or milk chocolate |
The marshmallows are the star here, so grab the 12 oz bag—it's the perfect amount for that signature stretchy texture. Kraft marshmallows are the classic choice, but Dandies or Jet-Puffed work too if you're feeling fancy. The butter needs to be unsalted and cold when you add it to the marshmallows—this prevents premature melting and ensures smooth, creamy results. For the cereal, stick with original Rice Krispies—the crispiness is key, and other flavors can throw off the balance. Pro tip: check the expiration date on your marshmallows; stale ones make for dry treats.
No vanilla extract? Almond extract at half the amount works in a pinch, though it'll have a slightly different flavor profile. Short on butter? Coconut oil melts similarly, but it has a distinct taste—use it if you're making a tropical twist. Want to skip the chocolate chips? White chocolate chips or crushed pretzels add fun variations. The nonstick spray is non-negotiable for easy release—Misto or Pam are my go-tos. And if you're worried about the foil sticking, lightly grease the pan first with a tiny bit of butter before spraying. Trust me, it makes all the difference when cutting those perfect squares.
This recipe makes a 13x9-inch pan of treats that stays fresh for 3-4 days at room temperature, though they're usually gone in hours. For longer storage, wrap tightly in plastic wrap and keep in the fridge for up to 1 week. Freeze for 3 months if you're prepping ahead—just thaw at room temperature before serving. The foil makes serving easy, but if you're feeling fancy, transfer to a wooden board for a rustic touch. Leftovers? Pop them in the toaster for 10 seconds to revive the crispiness.
Why You'll Love This Recipe
- Let’s talk numbers: 12 oz of marshmallows, a stick of butter, and a box of cereal? That’s under $5 for a treat that feels indulgent. And the leftovers? They last a week if you’re sneaky about it (or just admit you’ll eat them all in two days). It’s the kind of recipe that makes frugal living feel like a victory.
- No-Fuss Magic: I swear, this recipe is the kind of thing you can make while half-asleep. Melt butter, fold in marshmallows, toss in cereal—no fancy steps, just hands-on simplicity. The mini marshmallows melt into that perfect gooey blanket around each crispy Rice Krispie, and honestly? It’s the kind of treat that makes you feel like a baking genius without any effort.
- Secretly Gourmet: Between us, vanilla extract and a pinch of salt turn this into something way more sophisticated than the classic version. The butter stays rich without burning, and those mini marshmallows? They puff up just enough to create pockets of melty heaven in every bite. It’s the kind of flavor that makes people ask, “Wait, you made this from scratch?”
- Party in a Pan: I’ve used these for everything from kids’ birthday treats to last-minute teacher gifts, and they never disappoint. The batch size is just right—big enough to share, small enough to not overwhelm. Plus, they cut cleanly into squares, so no one’s left holding a messy lump of cereal.
Step-by-step instructions for perfect Rice Krispie treats
These treats come together faster than you can say "no-bake magic"—just follow these simple steps.
Melt Butter and Marshmallows Together
Line a large microwave-safe bowl with the sheet of aluminum foil, leaving excess to handle easily. In this bowl, combine the 6 tablespoons of cold, cubed unsalted butter and the 12 ounces of mini marshmallows. Microwave on high for 2 minutes, then stir vigorously with a wooden spoon or silicone spatula to break up any large marshmallow clumps.
Return the mixture to the microwave and cook for another 2 minutes. Here's the thing—you want the butter to melt completely while the marshmallows soften but not brown. After the second interval, give it another stir, then microwave in 30-second bursts until the butter is fully melted and the marshmallows are smooth and glossy. This should take about 1-2 minutes total additional time, depending on your microwave's power.
Add Vanilla and Salt for Flavor Balance
Immediately after removing the mixture from the microwave, stir in the 0.5 teaspoon of vanilla extract and 0.25 teaspoon of salt. The vanilla will infuse quickly while the mixture is still hot, and the salt enhances all the sweetness. Work fast here—the marshmallow mixture starts setting as it cools, so you want to get to the next step within 2 minutes.
If you notice any unmelted butter or marshmallow bits at this stage, return the mixture to the microwave for 15-20 seconds to fully combine. The texture should be smooth and slightly thicker than syrup, with a glossy sheen that indicates it's ready for the cereal.
Fold in Rice Krispies and Chocolate Chips
Quickly add the 6 cups of Rice Krispies cereal to the marshmallow mixture and fold gently with a spatula. You'll want to work efficiently but carefully—overmixing can create air pockets, while undermixing leaves dry cereal spots. The goal is even distribution while maintaining that creamy texture. I like to use a folding motion, lifting from the bottom of the bowl and turning over the top layer.
Once the cereal is mostly incorporated, fold in the 0.5 cup of chocolate chips. Don't worry if they're not perfectly distributed—you'll get that when you press the mixture into the pan. The chocolate chips will melt slightly from the residual heat, creating pockets of gooey goodness throughout.
Press into Pan for Perfect Texture
Lightly spray a 9x13-inch baking dish with nonstick cooking spray. Working quickly, transfer the marshmallow-cereal mixture to the prepared pan and press down firmly and evenly with a greased spatula or the back of a spoon. Press until the mixture reaches the edges of the pan and the top looks smooth and compact—this ensures clean cuts later.
Here's where patience pays off: let the treats cool completely in the pan for at least 1 hour before attempting to cut. The longer they cool, the easier they'll be to slice into perfect squares. If you're impatient, chill in the refrigerator for 30 minutes to speed up the process, but don't skip this step entirely—it makes all the difference in clean cuts.
Pro Tips For Making Rice Krispie Treats Recipe 12 Oz Marshmallows
- STOP STIRRING TOO SOON: The butter-marshmallow mix will look like a sad, lumpy mess at first—that’s normal. Let it cook undisturbed for 3-4 minutes until it’s smooth and bubbling like a thick syrup before you even think about folding in the cereal. I learned this the hard way after scraping burnt bits off my pot twice.
- USE REAL BUTTER: Margarine or vegan butter substitutes turn these treats into a chewy, greasy disappointment. Unsalted butter gives the perfect melt and a subtle richness—plus, you control the saltiness. Skip the shortcut here; it’s worth the extra 20 cents.
- PRESS FASTER, REST LATER: Dump the hot mixture into a greased pan and press it down hard with a spatula while it’s still soft—this prevents cracks. Then, let it cool completely (10-15 minutes) before cutting. I used to rush the pressing, and the treats would crumble like cereal in milk.
- SWAP MINIS FOR STANDARDS: Mini marshmallows make the treats dense and chewy, but standard marshmallows create a lighter, airier texture. If you’re using 12 oz of minis, reduce the butter by 1 tablespoon—minis absorb more fat. (Yes, even if the recipe doesn’t say so.)
Essential equipment for this recipe
Microwave Essentials
Your microwave is the star of this recipe, so having a large microwave-safe bowl (at least 3-quart capacity) is non-negotiable. I use a Pyrex 3-quart bowl because it handles heat well and won’t crack under the marshmallow mixture’s weight.
A wooden spoon or silicone spatula is essential for stirring—metal utensils can scratch the bowl or melt from the heat. 🔥
If your microwave’s power varies, test the melting time with just 1 ounce of marshmallows first. Some microwaves run hotter and can burn marshmallows in seconds, while others need extra time. The goal is a smooth, glossy mixture—not a sticky mess or a burnt puddle.
Pan and Foil Setup
A 9x13-inch baking dish is the gold standard for classic Rice Krispie treats, but any rectangular pan (like an 8x8-inch) works if you adjust the quantity. Spray it with nonstick cooking spray (I swear by Misto Olive Oil) before adding the mixture to prevent sticking.
The aluminum foil lining is your secret weapon—it makes cutting clean squares effortless and keeps the treats from sticking to the pan.
For easy removal, leave 2-3 inches of foil overhang on all sides. This gives you handles to lift the treats out of the pan without breaking them. If you’re worried about the foil sticking, lightly grease the pan with butter before spraying—it creates a barrier that works wonders.
Mixing Tools
A silicone spatula is your best friend for folding in the Rice Krispies and chocolate chips. It’s flexible enough to scrape every last bit from the bowl’s edges while being heat-resistant. Avoid metal spoons—they can melt or leave streaks in the marshmallow mixture.
For pressing the treats into the pan, a greased spatula or the back of a spoon works perfectly to create that signature smooth, compact texture.
Pro tip: Keep a small bowl of cold water nearby while mixing. If the marshmallow mixture starts to set too quickly (it happens fast!), dip your spatula in the water to soften it slightly and keep working. This trick buys you extra time to fold in all the cereal.
Optional Extras
For chocolate lovers, semi-sweet or milk chocolate chips (like Hershey’s Special Dark) add pockets of gooey goodness. If you’re feeling fancy, swap them for white chocolate chips or chopped chocolate bars for a creamy contrast.
A piping bag with a star tip lets you drizzle melted chocolate in decorative patterns over the set treats—great for parties or gifting.
Need a quick upgrade? A sprinkle of sea salt on top after pressing adds a sophisticated contrast to the sweetness. Or, for a tropical twist, fold in crushed pineapple or coconut flakes with the cereal. Just remember: these extras should complement, not overpower, the classic marshmallow-butter-cereal combo.
Nutrition facts
Frequently asked questions
Why do my Rice Krispie treats turn out sticky or gummy? The most common cause is overmixing or not pressing the mixture firmly enough into the pan.
Can I substitute regular marshmallows for mini marshmallows?
Not directly—the 12 oz measurement refers to mini marshmallows specifically. Regular marshmallows are much larger, so you'd need about 4 oz instead. Mini marshmallows melt more evenly and create that signature stretchy texture. If you only have regular marshmallows, chop them into small pieces before melting.
How do I make these treats without chocolate chips?
Simply omit the chocolate chips entirely! The classic version relies on just the marshmallow-butter-cereal combo. For extra flavor, try adding 1 teaspoon of cinnamon or 0.5 teaspoon of almond extract when mixing in the cereal. You can also sprinkle crushed nuts or coconut flakes on top before pressing for added texture.
What's the best way to store leftover treats?
Wrap tightly in plastic wrap or store in an airtight container at room temperature for 3-4 days. For longer storage, refrigerate for up to 1 week or freeze for 3 months. To revive stale treats, warm in the microwave for 10-15 seconds or toast in the oven at 300°F for 5 minutes.
Can I make these treats in a slow cooker?
Use the same ingredients but melt on low heat instead of the microwave. Cook for 10-15 minutes, stirring constantly until smooth. The slow cooker method gives you more control over the temperature and prevents burning. Just be patient—it takes longer but works beautifully for larger batches.