Monster Cookie Bars

5 from 1 review

These monster cookie bars are super chewy and easy to make. They are a soft cookie bar with peanut butter, quick oats, mini M&M's and mini chocolate chips.

Prep Time20

Cook Time30

Total Time50

Servings: slices

Calories: 289kcal

Author: Stephanie Rutherford

Ingredients

1 2/3 cups All-purpose flour
1/2 tsp Baking soda
3/4 tsp Salt
3/4 cup Unsalted butter melted
3/4 cup Brown sugar packed light or dark
1/3 cup White granulated sugar
1 tsp Pure vanilla extract
1/2 cup Peanut butter creamy
2 Large eggs room temperature
1 cup Quick oats
3/4 cup Mini M&M's plus more for topping
3/4 cup Mini chocolate chips plus more for topping

US - Metric

Instructions

Preheat the oven to 350℉. Spray a 9X9-inch baking pan with baking spray. Line the bottom and 2 sides with parchment paper and spray again.
In a medium bowl, mix the flour, baking soda, and salt. Set aside.
1 2/3 cups All-purpose flour, 1/2 tsp Baking soda, 3/4 tsp Salt
In a separate bowl, mix the melted butter, brown sugar, sugar, vanilla, peanut butter, and eggs. Mix with a whisk until combined.
3/4 cup Unsalted butter, 3/4 cup Brown sugar, 1/3 cup White granulated sugar, 1 tsp Pure vanilla extract, 1/2 cup Peanut butter, 2 Large eggs
Pour in the dry ingredients and mix using a baking rubber spatula. Mix until all the dry ingredients are combined. Add in the oats, chocolate chips, and M&M's.
1 cup Quick oats, 3/4 cup Mini M&M's, 3/4 cup Mini chocolate chips
Transfer the cookie dough into the pan. Use the spatula to make sure it spread evenly. Top with extra chocolate chips and M&M's.
Bake for 27-32 minutes. Bake until the top is lightly golden brown. Place hot pan on cooling rack and cool completely before cutting. They will continue to cook as it cools.

Notes

Flour- Make sure flour is spooned and leveled or use a kitchen scale. Compacted flour can dry out the cookies and make them cakey.

High altitude baking- Add an extra 1 TBSP of flour.

Pull out dairy ingredients 2 hours before baking.

Nutrition