The BEST Monster Cookie Recipe - JUMBO Monster Cookies (2024)

What ingredients are in a monster cookie recipe?

• Peanut Butter – I recommend creamy, but if you like small bits of peanuts, crunchy peanut butter is also a great option.
• Butter – an essential ingredient for any cookie recipe. Room temperature butter is ideal for creaming together with the sugars.
• Eggs – large, room temperature eggs are ideal.
• Light brown sugar – you could also use dark brown sugar
• Granular sugar – also known as white sugar
• Vanilla extract – great for amplifying the flavor of the cookies.
• Oatmeal – for this recipe you could use either quick oats or old fashioned oats.
• Baking soda – a necessary leavening for baking cookies. Don’t leave this out!
• Salt – very helpful for flavor. You can reduce the amount, but don’t eliminate completely.
• Chocolate chips – I recommend semi-sweet, but you could also use mini-chips, milk chocolate chips, or chocolate chunks.
• Plain M&M candies – you could also use Mini M&M’s, Peanut M&M’s or Peanut Butter M&M’s.

For exact ingredient amounts and full recipe instructions be sure to scroll down to the bottom of the post for the recipe. Thanks!

Extra Monster Cookie Mix-In’s:

• Mini chocolate chips or chocolate chunks
• Peanut Butter Chips
• White Chocolate Chips
• Reese’s Pieces candies
• Mini, Peanut or Peanut Butter M&M’s
• Mini Reese’s peanut butter cups
• Chopped peanuts

For exact ingredient amounts and full recipe instructions be sure to scroll down to the recipe at the bottom of the post. Thanks!

Frequently asked questions about making monster cookies:

• 1 1/2 cup creamy peanut butter
• 1 cup light brown sugar
• 1 cup granulated sugar
• 1/2 cup butter room temperature
• 3 eggs
• 1 teaspoon vanilla extract
• 4 1/2 cups oatmeal quick or old fashioned oats
• 2 teaspoons baking soda
• 1/2 teaspoons salt
• 1 1/3 cups semi-sweet chocolate chips
• 1 1/3 cups plain M&M candies

• Preheat oven to 350 degrees. Line baking sheet(s) with silicone baking mats or parchment paper. Set aside.

• In a large mixing bowl, cream together the butter and sugars. Stir in peanut butter, eggs and vanilla until completely combined.

• In a separate bowl, mix together the oatmeal, baking soda and salt. Gradually add the oatmeal mixture to the wet ingredients until fully incorporated.

• Fold in the chocolate chips and M&M's

• Using a 1/4 cup measuring cup or scoop, scoop the batter and form the cookies on the baking sheet. For these larger jumbo cookies, only place six cookies to a pan.

• Bake at 350 degrees for 12-14 minutes or until cookies are golden brown.

• Let baked cookies cool on pan for 5 minutes before transferring to a cooling rack to cool completely.

For ingredient substitutions and options be sure to scroll up to the ingredient section.

Storage: cookies can be kept at room temperature. Stored in an air-tight container, cookies will keep for 3-4 days. Cookies can be frozen. Store in a freezer bag or air-tight container. Cookies will keep for up to 3 months frozen.