Oh, those afternoons! School’s out, homework’s done (mostly!), and the kids suddenly announce, “Mom, I’m starving! What’s for a treat?” My heart often races, thinking of elaborate bakes.
But then, a little secret weapon entered our lives: the incredible microwave rice krispie cake. This isn’t just any treat; it’s a moment of pure magic created in minutes. I remember one frantic Tuesday.
We had no dessert, no time, and three hungry faces looking up at me. That’s when I perfected my go-to microwave rice krispie cake. It saved the day, brought giant smiles, and made me feel like a culinary superhero.
This easy microwave rice krispie cake is truly a game-changer for busy families. It’s simple, sweet, and unbelievably quick. My kids now ask specifically for “Mom’s microwave rice krispie cake” all the time!
You’ll love bringing this quick rice krispie cake into your home. It’s perfect for last-minute cravings.
WHY YOU’LL LOVE THIS RECIPE: THE ULTIMATE MICROWAVE RICE KRISPIE CAKE
You need this microwave rice krispie cake in your life! First, it’s incredibly fast. Seriously, you can have this delicious microwave rice krispie ready in under 10 minutes.
Second, no oven needed, which means less heat in the kitchen and fewer dishes. It’s truly a no-fuss cake. Third, kids absolutely adore it!
The fun of making and eating this microwave rice krispie cake is undeniable. Finally, it’s endlessly customizable. Make your microwave rice krispie cake unique every time. It’s the perfect easy dessert.
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microwave rice krispie cake
- Total Time: 38 mins
- Yield: 12 servings 1x
Description
This easy microwave rice krispie cake is a game-changer for busy families, offering a quick, sweet, and unbelievably fast treat made in under 10 minutes of active time. It's a no-fuss dessert that requires no oven, is endlessly customizable, and is perfect for last-minute cravings, bringing smiles to kids and adults alike.
Ingredients
3 tablespoons Butter (unsalted)
4 cups Mini Marshmallows (10 oz bag)
1 teaspoon Vanilla Extract
6 cups Rice Krispies Cereal
Instructions
- Prepare Your Pan: Grease a 9×13 inch pan or an 8×8 inch square pan (for a thicker cake) with butter or cooking spray. Line with parchment paper for easy removal if desired
- Melt Butter & Marshmallows: In a large microwave-safe bowl, combine butter and marshmallows. Microwave on high for 1 minute. Stir well. Continue microwaving in 30-second intervals, stirring after each, until the mixture is smooth and completely melted
- Add Vanilla: Stir in the vanilla extract until fully combined
- Combine with Cereal: Add the Rice Krispies cereal to the marshmallow mixture. Stir quickly with a greased spatula until the cereal is evenly coated. Work fast, as the mixture cools quickly
- Press into Pan: Transfer the mixture to your prepared pan. Using buttered hands or a greased piece of parchment paper, gently but firmly press the mixture evenly into the pan. Do not compact it too much, or your rice krispie cake will become hard
- Cool & Cut: Let the microwave rice krispie cake cool completely at room temperature for about 1 hour, or chill in the refrigerator for 30 minutes to speed up setting. Once firm, cut into squares or desired shapes
Notes
Always use fresh marshmallows. Stale marshmallows will make your microwave rice krispie cake hard and difficult to mix.
Once you add the cereal, mix just until combined. Over-mixing can crush the cereal and result in a dense easy rice krispie cake.
When pressing the mixture into the pan, lightly butter or spray your hands with cooking spray. This prevents sticking and helps create an even microwave rice krispie cake.
Avoid pressing the cereal mixture too firmly into the pan. A gentle press keeps your quick rice krispie cake soft and chewy.
Store your delicious microwave rice krispie cake properly to maintain its freshness. Keep your rice krispie cake in an airtight container at room temperature for up to 3 days.
Avoid refrigerating, as this can make your microwave rice krispie cake hard. If your microwave rice krispie cake somehow gets a little stiff, you can warm a piece for 5-10 seconds in the microwave to soften it slightly before serving.
Serve your microwave rice krispie cake with a cold glass of milk for a classic combination. A scoop of vanilla ice cream makes it an extra indulgent dessert. Fresh berries or sliced fruit offer a nice contrast to the sweetness of the microwave rice krispie cake.
The key to a soft microwave rice krispie cake is not overcooking the marshmallows and not pressing the mixture too firmly into the pan. Use fresh marshmallows and gently press the cereal into the pan for the best texture.
Once your microwave rice krispie cake has cooled and set, use a sharp, lightly greased knife. You can also spray the knife with cooking spray before each cut for clean, neat slices.
- Prep Time: 5 mins
- Cook Time: 3 mins
- Category: Dessert
- Method: Microwave
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 160 kcal
- Sugar: 20g
- Sodium: 90mg
- Fat: 5g
- Saturated Fat: 3g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 29g
- Fiber: 0g
- Protein: 1g
- Cholesterol: 10mg
Keywords: microwave, rice krispie cake, treats, dessert, easy, quick, no-bake, kids, sweet, snack
INGREDIENTS YOU’LL NEED
Gather these simple ingredients for your delightful microwave rice krispie cake.

| Ingredient | Quantity |
|---|---|
| Butter (unsalted) | 3 tablespoons |
| Mini Marshmallows | 4 cups (10 oz bag) |
| Vanilla Extract | 1 teaspoon |
| Rice Krispies Cereal | 6 cups |
SUBSTITUTIONS & VARIATIONS
Get creative with your microwave rice krispie cake! You can easily swap out ingredients to match your family’s preferences. For example, try using brown butter for a nuttier flavor in your microwave rice krispie cake.
Add a handful of mini chocolate chips right after mixing for a chocolatey twist on your rice krispie cake. Sprinkles are always a hit; stir them in or sprinkle them on top of your warm easy rice krispie cake. Consider using different cereals like Fruity Pebbles for a colorful and different-flavored rice krispie cake. You can even press the mixture into a cupcake tin for individual cakes!
Beyond simple swaps, you can infuse a rich, nutty flavor into your microwave rice krispie cake by incorporating peanut butter. For more irresistible treats blending peanut butter with the classic crunch, consider trying these delightful Peanut Butter Balls with Rice Krispies.
STEP-BY-STEP INSTRUCTIONS
Making your microwave rice krispie cake is a breeze. Follow these easy steps for a perfect outcome.
- Prepare Your Pan: Grease a 9×13 inch pan or an 8×8 inch square pan (for a thicker cake) with butter or cooking spray. Line with parchment paper for easy removal if desired.
- Melt Butter & Marshmallows: In a large microwave-safe bowl, combine butter and marshmallows. Microwave on high for 1 minute. Stir well. Continue microwaving in 30-second intervals, stirring after each, until the mixture is smooth and completely melted. This ensures your microwave rice krispie cake has the perfect texture.
- Add Vanilla: Stir in the vanilla extract until fully combined.
- Combine with Cereal: Add the Rice Krispies cereal to the marshmallow mixture. Stir quickly with a greased spatula until the cereal is evenly coated. Work fast, as the mixture cools quickly. This step is crucial for a well-integrated microwave rice krispie cake.
- Press into Pan: Transfer the mixture to your prepared pan. Using buttered hands or a greased piece of parchment paper, gently but firmly press the mixture evenly into the pan. Do not compact it too much, or your rice krispie cake will become hard.
- Cool & Cut: Let the microwave rice krispie cake cool completely at room temperature for about 1 hour, or chill in the refrigerator for 30 minutes to speed up setting. Once firm, cut into squares or desired shapes.
PRO TIPS FOR SUCCESS
Achieve the best microwave rice krispie cake every time with these simple pointers.

- Fresh Marshmallows: Always use fresh marshmallows. Stale marshmallows will make your cake hard and difficult to mix.
- Don’t Over-Mix: Once you add the cereal, mix just until combined. Over-mixing can crush the cereal and result in a dense easy rice krispie cake.
- Grease Your Hands: When pressing the mixture into the pan, lightly butter or spray your hands with cooking spray. This prevents sticking and helps create an even microwave rice krispie cake.
- Gentle Press: Avoid pressing the cereal mixture too firmly into the pan. A gentle press keeps your quick rice krispie cake soft and chewy.
Using fresh marshmallows is key to a perfectly soft and chewy texture, a principle that extends to many other delightful marshmallow-based creations. If you love the gooey goodness of marshmallows in your treats, you’ll also adore making Caramel Marshmallow Rice Krispie Balls.
STORAGE & REHEATING TIPS
Store your delicious microwave rice krispie cake properly to maintain its freshness. Keep your rice krispie cake in an airtight container at room temperature for up to 3 days. Avoid refrigerating, as this can make your microwave rice krispie cake hard. If your microwave rice krispie cake somehow gets a little stiff, you can warm a piece for 5-10 seconds in the microwave to soften it slightly before serving.
WHAT TO SERVE WITH THIS RECIPE
This delightful microwave rice krispie cake is a treat on its own. However, pairing it with a few simple additions elevates the experience.

Serve your microwave rice krispie cake with a cold glass of milk for a classic combination.
A scoop of vanilla ice cream makes it an extra indulgent dessert. Fresh berries or sliced fruit offer a nice contrast to the sweetness of the microwave rice krispie cake.
While enjoying your microwave rice krispie cake with a glass of milk is a classic pairing, exploring other cereal combinations can lead to equally exciting dessert experiences. For another wonderfully crunchy and sweet treat that puts a delicious twist on traditional cereal bars, try these Golden Graham Rice Krispie Treats.
FAQS
Can I make this microwave rice krispie cake ahead of time?
Absolutely! You can prepare this microwave rice krispie cake up to 2 days in advance. Just store it properly in an airtight container at room temperature. The flavors of this easy rice krispie cake are often even better the next day!
How do I prevent my microwave rice krispie cake from being too hard?
The key to a soft rice krispie cake is not overcooking the marshmallows and not pressing the mixture too firmly into the pan. Use fresh marshmallows and gently press the cereal into the pan for the best texture.
What’s the best way to cut a microwave rice krispie cake?
Once your microwave rice krispie cake has cooled and set, use a sharp, lightly greased knife. You can also spray the knife with cooking spray before each cut for clean, neat slices of your rice krispie cake.
The microwave rice krispie cake is a popular variation of a classic no-bake dessert cherished for its speed and simplicity. These delightful confectioneries, often referred to as marshmallow cereal treats, are traditionally made by melting marshmallows and butter, then mixing them with puffed rice cereal. The microwave method further streamlines the process, allowing for an even quicker preparation without sacrificing the chewy, sweet results.
NUTRITION INFORMATION (PER SERVING)
This information is an estimate based on 12 servings of the standard microwave rice krispie cake recipe.
| Nutrient | Amount |
|---|---|
| Calories | 160 kcal |
| Total Fat | 5g |
| Saturated Fat | 3g |
| Cholesterol | 10mg |
| Sodium | 90mg |
| Total Carbohydrates | 29g |
| Sugars | 20g |
| Protein | 1g |