By Grocery List Plus Editorial Staff | Published on June 11, 2026
Serves 36
229 cal · 30 min
Monster Cookies
Recipe GLPR8e2dc159bf99ae
Hearty, chewy cookies loaded with peanut butter, oats, chocolate chips, and colorful M&Ms. These sweet treats are perfect for any occasion and sure to satisfy chocolate and peanut butter lovers alike.
Save recipes you love
Create a free Grocery List Plus account to save recipes, rate them, and add every ingredient to your grocery list in one tap.
Ingredients
8 tablespoons unsalted butter, softened
1 cup granulated sugar
1 cup brown sugar, packed
1½ cups creamy peanut butter
3 large eggs
1 teaspoon pure vanilla extract
4 cups rolled oats
2 teaspoons baking soda
1 cup milk chocolate M&Ms
1 cup chocolate chips or chopped semisweet chocolate
Directions
Preheat your oven to 350°F. Line baking sheets with parchment paper to prevent sticking.
In a large mixing bowl or stand mixer, cream together the softened butter, granulated sugar, brown sugar, and peanut butter. Beat for 2-3 minutes until the mixture is light and fluffy.
Add the vanilla extract to the wet mixture and blend well. Crack in the 3 large eggs one at a time, beating after each addition until fully incorporated.
In a separate bowl, combine the rolled oats and baking soda. Gradually fold or mix this dry mixture into the wet ingredients until just combined.
Fold in the milk chocolate M&Ms and chocolate chips until evenly distributed throughout the dough.
Drop heaping tablespoon-sized portions of dough onto the prepared baking sheets, spacing them about 2 inches apart to allow room for spreading.
Bake for 10-12 minutes, until the edges are set but the centers still appear slightly soft. The cookies will continue to cook on the hot baking sheet.
Allow the cookies to rest on the baking sheet for 3 minutes, then transfer them to a wire rack to cool completely.
Comments
Every ingredient is a pantry staple or impulse-buy candy at any major Charlotte chain—butter, sugars, peanut butter, eggs, vanilla, oats, baking soda, chocolate chips, and M&Ms or similar candies are all standard stock at Harris Teeter, Food Lion, Kroger, Walmart, and ALDI with no special stops required. Cost per serving lands around 25–30 cents, driven chiefly by the butter and peanut butter, making this an economical weeknight option. The stated 30 minutes is honest for mixing and baking combined, though you should add 10 minutes if cookies need to cool before eating; they don't demand babysitting in the oven. These pack well, reheat fine in a warm oven, and 36 cookies mean leftovers that hold for 3–4 days, so a batch covers multiple breakfasts or snacks for a busy household.
Sign in or create a free account to add your review.
