Monster Cookies Recipe
This monster cookies recipe turns oats, peanut butter, chocolate chips, and M&M candies into thick, chewy cookies with crisp golden edges.
These cookies taste rich and nostalgic, but they still use simple pantry staples. The oats add chew, the peanut butter adds deep roasted flavor, and the candy gives every bite a fun crunch.
Why You’ll Love This Recipe
- Big chewy texture: Rolled oats make the centers soft and hearty without making the cookies dry.
- Sweet and salty flavor: Peanut butter, brown sugar, and a little salt balance the chocolate and candy.
- Simple method: You only cream, mix, scoop, and bake.
- Great for sharing: One small batch makes 8 large cookies, enough for 4 generous servings.
Fabian’s Budget Tip: Use store brand peanut butter, oats, and chocolate chips. If M&M candies cost more that week, replace half with extra chocolate chips or chopped chocolate from a bargain bar.
Ingredients (Serves 4)
Makes about 8 large cookies
- 3/4 cup all purpose flour (94 g)
- 3/4 cup rolled oats (67 g)
- 1/2 teaspoon baking soda (3 g)
- 1/4 teaspoon fine salt (1.5 g)
- 1/3 cup unsalted butter, softened (75 g)
- 1/3 cup creamy peanut butter (85 g)
- 1/3 cup packed brown sugar (67 g)
- 3 tablespoons granulated sugar (38 g)
- 1 large egg, room temperature (about 50 g without shell)
- 1 teaspoon vanilla extract (5 ml)
- 1/3 cup semisweet chocolate chips (57 g)
- 1/3 cup M&M candies (67 g)
Step-by-Step Instructions
1. Heat the Oven and Prepare the Pans
Heat the oven to 350°F (175°C). Line two baking sheets with parchment paper. Leave space between the cookies because they spread as the butter melts.
2. Mix the Dry Ingredients
Add the all purpose flour, rolled oats, baking soda, and salt to a medium bowl. Stir until the oats look evenly coated with flour. This helps every cookie bake with the same soft, chewy bite.
3. Cream the Butter, Peanut Butter, and Sugars
Add the softened butter, peanut butter, brown sugar, and granulated sugar to a large bowl. Beat until the mixture looks creamy, slightly lighter in color, and smells nutty and sweet. Scrape the bowl so no dense butter streaks hide at the bottom.
4. Beat in the Egg and Vanilla
Add the egg and vanilla. Beat until the dough looks smooth and glossy. The vanilla should smell warm and sweet, and the peanut butter should look fully blended into the batter.
5. Add the Dry Ingredients and Oats
Add the flour and oat mixture to the wet mixture. Stir just until no dry flour patches remain. Stop as soon as the dough looks thick and scoopable. Overmixing can make the cookies tough.
6. Fold in the Chocolate and Candy
Add the semisweet chocolate chips and M&M candies. Fold gently until they are spread through the dough. The dough should look chunky, colorful, and packed with bits of chocolate.
7. Scoop the Cookies
Scoop the dough into 8 large mounds, about 3 tablespoons each. Place them on the prepared baking sheets with plenty of room between each mound. Press a few extra chocolate chips or candies on top if you want a bakery style look.
8. Bake Until the Edges Set
Bake for 10 to 12 minutes, or until the edges look set and lightly golden while the centers still look soft. The cookies will smell like toasted oats, peanut butter, and warm chocolate. Let them rest on the baking sheet for 10 minutes so the centers finish setting without drying out.
Expert Troubleshooting & FAQs
Why did my monster cookies spread too much?
Your butter may have been too warm, or your baking sheet may have been hot from a previous batch. Chill the dough for 20 minutes if it feels greasy or very soft before baking.
Why are my cookies dry?
Too much flour or too much baking time can dry them out. Spoon the flour into the measuring cup, level it gently, and pull the cookies from the oven while the centers still look soft.
Can I use quick oats instead of rolled oats?
Yes, but the texture will be softer and less chewy. Rolled oats give the best hearty bite and classic monster cookie texture.
Can I use natural peanut butter?
You can, but choose a well stirred creamy peanut butter. If it is oily or runny, the cookies may spread more and taste less balanced.
How should I store monster cookies?
Store cooled cookies in an airtight container at room temperature for up to 4 days. Add a small piece of bread to the container if you want them to stay soft.
Estimated Nutritional Facts
Per serving, based on 2 large cookies:
- Calories: about 680
- Protein: about 13 g
- Carbs: about 82 g
- Fats: about 35 g
Monster Cookies Recipe
Ingredients
- 3/4 cup all purpose flour (94 g)
- 3/4 cup rolled oats (67 g)
- 1/2 teaspoon baking soda (3 g)
- 1/4 teaspoon fine salt (1.5 g)
- 1/3 cup unsalted butter, softened (75 g)
- 1/3 cup creamy peanut butter (85 g)
- 1/3 cup packed brown sugar (67 g)
- 3 tablespoons granulated sugar (38 g)
- 1 large egg, room temperature (about 50 g without shell)
- 1 teaspoon vanilla extract (5 ml)
- 1/3 cup semisweet chocolate chips (57 g)
- 1/3 cup M&M candies (67 g)
Instructions
- 1. Heat the Oven and Prepare the Pans. Heat the oven to 350°F (175°C). Line two baking sheets with parchment paper. Leave space between the cookies because they spread as the butter melts.
- 2. Mix the Dry Ingredients. Add the all purpose flour, rolled oats, baking soda, and salt to a medium bowl. Stir until the oats look evenly coated with flour. This helps every cookie bake with the same soft, chewy bite.
- 3. Cream the Butter, Peanut Butter, and Sugars. Add the softened butter, peanut butter, brown sugar, and granulated sugar to a large bowl. Beat until the mixture looks creamy, slightly lighter in color, and smells nutty and sweet. Scrape the bowl so no dense butter streaks hide at the bottom.
- 4. Beat in the Egg and Vanilla. Add the egg and vanilla. Beat until the dough looks smooth and glossy. The vanilla should smell warm and sweet, and the peanut butter should look fully blended into the batter.
- 5. Add the Dry Ingredients and Oats. Add the flour and oat mixture to the wet mixture. Stir just until no dry flour patches remain. Stop as soon as the dough looks thick and scoopable. Overmixing can make the cookies tough.
- 6. Fold in the Chocolate and Candy. Add the semisweet chocolate chips and M&M candies. Fold gently until they are spread through the dough. The dough should look chunky, colorful, and packed with bits of chocolate.
- 7. Scoop the Cookies. Scoop the dough into 8 large mounds, about 3 tablespoons each. Place them on the prepared baking sheets with plenty of room between each mound. Press a few extra chocolate chips or candies on top if you want a bakery style look.
- 8. Bake Until the Edges Set. Bake for 10 to 12 minutes, or until the edges look set and lightly golden while the centers still look soft. The cookies will smell like toasted oats, peanut butter, and warm chocolate. Let them rest on the baking sheet for 10 minutes so the centers finish setting without drying out.
