We have been making this monster cookie bar recipe for years since we got it from our friends. It is easy and fast, and is a hit in any event!



Original recipe yields 20 servings
The ingredient list now reflects the servings specified


Instructions Checklist
  • Preheat the oven to 400 degrees F (200 degrees C). Butter a 9x13-inch baking pan.

  • Combine brown sugar, butter, corn syrup, 1/4 cup peanut butter, and vanilla extract in a bowl. Add oats gradually. Press bar mixture into the prepared pan.

  • Bake in the preheated oven until golden brown, 12 to 14 minutes. Let cool for 4 minutes.

  • Melt chocolate chips, butterscotch chips, and 1/3 cup peanut butter in a microwave-safe bowl in 15-second intervals, stirring after each melting until blended, 1 to 3 minutes. Spread over warm bars. Let cool before cutting, 2 to 3 hours.

Nutrition Facts

280 calories; 14.6 g total fat; 16 mg cholesterol; 89 mg sodium. 34.6 g carbohydrates; 4.7 g protein; Full Nutrition


Rating: 5 stars
Followed as written. The chocolate never really hardens, but it makes it finger licking good. Super good and addicting. This makes a big batch, so it's great for a big crowd or as breakfast! Read More
Rating: 5 stars
Tried these yummy cookies and my kids and I loved them. They had the perfect amount of sweetness and crunchiness. Definitely a hit in my house. Read More