Microwave Peanut Butter Granola Bars Recipe

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Audrey Hopkins Modified: April 6, 2022
Microwave Peanut Butter Granola Bars Recipe

How To Make Microwave Peanut Butter Granola Bars

Enjoy these granola bars with a rich, peanut butter flavor and made entirely of Rice Krispies. It’s sweet and easy to make, it’s a delicious instant treat!

Preparation: 10 minutes
Cooking: 2 minutes
Total: 12 minutes



  • 2cupsquick oats
  • 2cupsRice Krispies cereal
  • 1cupchunky peanut butter
  • ½cuphoney
  • ¼cupdark brown sugar
  • tspsalt
  • ½tspvanilla extract


  1. Line an 8×8-inch baking dish with aluminum foil leaving a 2-inch overhang. In a large mixing bowl, toss together oats and Rice Krispies, set aside.

  2. In a separate microwave-safe mixing bowl, combine peanut butter, honey, brown sugar and salt. Heat mixture on High power for 1 minute, remove and stir. 

  3. Return to microwave and heat on High power 1 minute longer. Remove from microwave, pour in vanilla and whisk mixture for 30 seconds.

  4. Pour peanut butter mixture over oat mixture and toss well to evenly coat. 

  5. Pour mixture into a prepared baking dish, firmly press mixture into an even layer. Cover with plastic wrap and freeze 10 to 15 minutes or chill in refrigerator for 30 minutes.

  6. Lift bars from dish using foil overhang and cut into squares. Store in an airtight container.


  • Calories: 249.72kcal
  • Fat: 12.05g
  • Saturated Fat: 2.39g
  • Trans Fat: 0.02g
  • Monounsaturated Fat: 5.87g
  • Polyunsaturated Fat: 3.03g
  • Carbohydrates: 32.25g
  • Fiber: 2.37g
  • Sugar: 17.43g
  • Protein: 6.94g
  • Sodium: 52.89mg
  • Calcium: 20.41mg
  • Potassium: 184.83mg
  • Iron: 2.41mg
  • Vitamin A: 49.98µg
  • Vitamin C: 2.86mg
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