Monster Cookie Bars

Monster Cookie Bars are a chocolatey, peanut butter, oatmeal cookie in bar form and stuffed with M&Ms. If you've never tried Monster Cookies before, these might just be your new favorites.

4.62 from 21 votes

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Prep Time: 15

Cook Time: 30

Cool Time: 1

Servings:

Calories: 290kcal

Ingredients

1/2 cup (111g) salted butter, softened
1/4 cup (62g) peanut butter
1 cup (246g) brown sugar
1/4 cup (58g) granulated sugar
2 eggs
2 tsp vanilla extract
2 cups (304g) all-purpose flour
1 cup (100g) rolled oats
1 tsp baking soda
1/2 tsp baking powder
1/2 tsp salt
1 cup (200g) semi sweet chocolate chips
3/4 cup (150g) m&m's

Instructions

Line a 9x9 pan with parchment paper and set aside.
Preheat oven to 350° F (180°C).
.Cream together the butter, peanut butter, brown sugar and granulated sugar until smooth and creamy.
1/2 cup (111g) salted butter, softened, 1/4 cup (62g) peanut butter, 1 cup (246g) brown sugar, 1/4 cup (58g) granulated sugar
Add the eggs and vanilla. Mix until well combined.
2 tsp vanilla extract , 2 eggs
Add the flour, oats, baking soda, baking powder and salt. Mix until a sticky dough forms.
2 cups (304g) all-purpose flour, 1 cup (100g) rolled oats, 1 tsp baking soda, 1/2 tsp baking powder, 1/2 tsp salt
Lastly, mix in the chocolate chips and m&m’s.
1 cup (200g) semi sweet chocolate chips, 3/4 cup (150g) m&m's
Pour the mixture into the prepared pan and loosely press and pack the dough into the pan.
Bake at 350°F (180°C) for 25-30 minutes or until the tops are golden brown.
Allow the cookie bars to cool completely before removing from the pan and cutting.
Enjoy!
Store in an airtight container for 3-4 days at room temperature.

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