The aroma of freshly baked cookies fills the kitchen, inviting anyone nearby to indulge. These Giant Monster Cookies are not only a treat for the taste buds but also come together in about 30 minutes. Their appeal lies in their delightful combination of peanut butter, chocolate, and oats, creating a chewy yet satisfying texture that keeps you coming back for more.
This recipe is perfect for cookie lovers of all ages. Whether you’re hosting a party, looking for a fun dessert to make with kids, or simply craving a sweet snack, these cookies fit the bill. For best results, consider making a batch ahead of time and storing them for a quick treat throughout the week.
Why You’ll Love This Recipe
- The mix of peanut butter and chocolate offers a rich, satisfying flavor.
- The addition of oats gives the cookies a hearty texture.
- They bake quickly, allowing for instant gratification.
- Each cookie is large, perfect for sharing or satisfying a sweet tooth.
What You’ll Need
Gather these ingredients for your Giant Monster Cookies.
For the Cookie Base
- 1 cup peanut butter
- 1 cup brown sugar
- 1 cup granulated sugar
- 3 large eggs
- 2 teaspoons vanilla extract
For the Dry Ingredients
- 2 cups rolled oats
- 1 teaspoon baking soda
For the Mix-Ins
- 1 cup M&M’s
- 1 cup chocolate chips
Consider using crunchy peanut butter for added texture.
Substitutions & Swaps
- Natural peanut butter for creamy texture
- Dark chocolate chips for richer flavor
- Gluten-free oats for a gluten-sensitive option
How to Make It
Get ready to bake these delicious cookies!
1. Preheat
Preheat the oven to 350°F (175°C) so it’s ready for baking.
2. Mix
In a large bowl, mix the peanut butter, brown sugar, and granulated sugar until well combined.
3. Add
Add the eggs and vanilla extract, and mix until smooth.
4. Combine
In a separate bowl, combine the rolled oats and baking soda, then gradually add to the wet mixture.
5. Fold
Fold in the M&M’s and chocolate chips until evenly distributed.
6. Scoop
Scoop large portions of dough onto a baking sheet lined with parchment paper, leaving space between each cookie.
7. Bake
Bake for 10-12 minutes or until the edges are lightly golden.
8. Cool
Let cool for a few minutes before transferring to a wire rack to cool completely.
How to Store It
Fridge: up to 5 days in an airtight container.
Freezer: yes, for longer freshness.
Reheat: microwave for 10-15 seconds.
Tips for Best Results
- Use room temperature eggs for better mixing.
- Don’t overmix once the oats are added to keep the cookies tender.
- Experiment with different types of chocolate chips for variety.
- Allow cookies to cool properly to maintain their shape.
Serving Suggestions
- Pair with a glass of cold milk for a classic treat.
- Use as a fun dessert for birthday parties.
- Serve alongside ice cream for an indulgent sundae experience.


