- 4 cups crispy corn cereal squares (such as Corn Chex®)
- 4 cups crispy rice cereal squares (such as Rice Chex®)
- 1 cup pretzels
- 1 cup peanuts
- 1/2 cup peanut butter
- 1/4 cup butter
- 2 1/4 teaspoons Worcestershire sauce
- 1/2 teaspoon salt
- 1/4 teaspoon garlic powder
- 1/2 cup candy corn, or to taste (optional)
- 1/2 cup candy-coated milk chocolate pieces (such as M&M;'s®), or to taste (optional)
- Preheat oven to 250 degrees F (120 degrees C). Grease a 10×15-inch baking sheet.
- Combine corn cereal, rice cereal, pretzels, and peanuts in a large bowl.
- Heat peanut butter, butter, Worcestershire sauce, salt, and garlic powder in a saucepan over high heat until peanut butter is melted, about 5 minutes. Pour mixture over cereal mixture and toss to evenly coat. Spread cereal mixture over prepared baking sheet.
- Bake in the preheated oven, stirring every 15 minutes, until cereal mixture is dry, about 1 hour. Allow to cool. Stir candy corn and chocolate pieces into cereal mixture before serving.