1-First Step: Gather and Measure Ingredients
Start your mise en place by measuring 9 cups Corn Chex cereal into a very large mixing bowl. This prevents sogginess later. Have 1 cup semi-sweet chocolate chips, ½ cup creamy peanut butter, ¼ cup unsalted butter, and 1½ cups powdered sugar ready nearby. Line two baking sheets with parchment paper for cooling. Pro tip: Room temperature ingredients melt faster.

2-Second Step: Melt the Chocolate Mixture
In a microwave-safe bowl, combine chocolate chips, peanut butter, and butter. Microwave on high in 30-second bursts, stirring after each. It takes 1-2 minutes total until smooth and glossy. Avoid overheating to prevent seizing. For stovetop, use low heat with constant stirring. This classic puppy chow recipe from Joyfood Sunshine confirms microwave works best for speed.

3-Third Step: Coat the Cereal
Pour the warm chocolate-peanut butter mix over the Chex cereal. Gently fold with a spatula or gloved hands to coat evenly. Work quickly before it hardens. Don’t crush the squares; aim for light coverage. If needed, do in two batches for large amounts.

4-Fourth Step: Sugar Coat the Mix
Transfer half the coated cereal to a large zip-top bag with ¾ cup powdered sugar. Seal and shake vigorously for 1 minute until fully covered. Repeat with remaining cereal and sugar. The sugar absorbs excess moisture for perfect crunch.

5-Fifth Step: Cool and Set
Spread puppy chow on prepared sheets in a single layer. Let cool 15-20 minutes at room temp. Break up clumps. For faster setting, pop in fridge 5 minutes, but avoid longer to prevent softening.

6-Sixth Step: Serve and Enjoy
Once cool, transfer to bowls or airtight containers. Serve as party mix, top ice cream, or eat by handfuls. Stores well for snacks all week.