Peanut Butter Monster Cookies: A Decadent Homemade Treat That’ll Blow Your Mind!

Peanut Butter Monster Cookies: A Decadent Homemade Treat That’ll Blow Your Mind!

Key Info:

Prep Time: 20 minutes

Cook Time: 12 minutes

Total Time: 32 minutes

Servings: 16 cookies

Difficulty: Easy

Dietary Tags: Vegetarian, Contains Allergens

Overhead view of a marble countertop with baking ingredients: butter, peanut butter, sugar bowls, and eggs with natural light and vintage stand mixer.

Equipment Needed:
  • Large mixing bowl
  • Hand mixer or stand mixer
  • Baking sheets
  • Parchment paper
  • Measuring cups/spoons
  • Cookie scoop (optional but recommended)
Ingredients:
  • 1/2 cup unsalted butter, softened
  • 3/4 cup creamy peanut butter
  • 1/2 cup granulated sugar
  • 3/4 cup brown sugar
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 1 1/4 cups old-fashioned rolled oats
  • 1 cup all-purpose flour
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
  • 3/4 cup semi-sweet chocolate chips
  • 1 cup M&M candies
  • Optional: 1/4 cup chopped peanuts
Method:
  1. Preheat the oven to 350°F. Line baking sheets with parchment paper.
  2. Cream the Butter: In a large bowl, beat butter, peanut butter, and both sugars until light and fluffy (about 3-4 minutes).
  3. Add Wet Ingredients: Mix in eggs and vanilla extract until fully incorporated.
  4. Combine Dry Ingredients: In a separate bowl, whisk together oats, flour, baking soda, and salt.
  5. Create Dough: Gradually fold dry ingredients into wet mixture. Do not overmix!
  6. Add Mix-Ins: Gently stir in chocolate chips and M&Ms. Save a few for topping.
  7. Form Cookies: Use a cookie scoop to create uniform balls. Place 2 inches apart on baking sheet.
  8. Bake: Cook for 9-12 minutes until edges are golden but centers look slightly underbaked.
  9. Finishing Touch: Immediately press reserved M&Ms on top of warm cookies.

Close-up of monster cookies with M&Ms and chocolate chips on a cooling rack, highlighted by golden afternoon light with scattered crumbs and loose M&Ms.

Crucial Tips:
  • Room temperature ingredients blend more smoothly
  • Don’t overbake – cookies continue cooking on the sheet
  • Let cookies rest 5 minutes before transferring to cooling rack
Storage:
  • Airtight container at room temp: 5 days
  • Freezer: Up to 2 months
Common Mistakes to Avoid:
  • Overmixing the dough
  • Using cold ingredients
  • Baking on hot baking sheets
Variations:
  • Gluten-free: Replace flour with almond flour
  • Vegan: Use coconut oil, flax eggs
  • Less sweet: Reduce sugar, add more nuts
Nutrition Spotlight:
  • High protein from peanut butter
  • Indulgent treat with some nutritional benefits
  • Moderate portion control recommended
Pro Baker Secrets:
  • Chill dough for 30 minutes for thicker cookies
  • Use a light-colored baking sheet for even browning
  • Rotate pan halfway through baking for consistent results

Keywords: Monster cookies, peanut butter cookies, M&M cookies, easy baking recipe, homemade cookies

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