I’ve tried countless cookie recipes, but nothing compares to the chewy, flavorful perfection of homemade monster cookies. Packed with oats, peanut butter, chocolate chips, and M&M’s, they strike the ideal balance of sweet and satisfying. The secret lies in the simplicity of the ingredients and the method, which guarantees every bite is both soft and hearty. If you’re curious how these come together so effortlessly, you’ll want to find out what makes them truly stand out.
Recipe
“These Monster Cookies are hands down the best cookie recipe I’ve ever made—bold claim, I know, but trust me, they’re legendary. Packed with oats, peanut butter, chocolate chips, and M&M’s, they’re chewy, slightly crispy on the edges, and loaded with texture in every bite.
What makes them stand out? No flour needed—just wholesome ingredients that come together in the most delicious way. I’ve been making these for years, and they’re always the first to disappear at parties or potlucks.
The aroma alone as they bake will have your entire kitchen smelling like a cozy bakery. Whether you’re a cookie newbie or a seasoned baker, this recipe is foolproof and guaranteed to become your new go-to. Get ready to wow everyone (including yourself!) with these irresistible homemade treats.”
Ingredients
The secret to monster cookies that are chewy, packed with flavor, and loaded with texture? It’s all in the ingredients. These cookies are a mix of everything you love—peanut butter, oats, chocolate, and M&Ms—but the right ingredients make them next-level. Here’s what you’ll need, plus pro tips to nail the perfect batch every time.
- Peanut butter – Creamy or crunchy, but *natural peanut butter* (the kind you stir) can make the dough too oily. Stick with shelf-stable for consistency.
- Old-fashioned oats – *Not instant oats*—they hold their shape better for that chewy bite.
- Butter – *Unsalted and softened* so it creams perfectly with the sugars.
- Brown sugar & granulated sugar – The combo gives depth and chew. *Dark brown sugar* adds extra molasses richness.
- Eggs – *Room temperature* blends smoother into the dough.
- Vanilla extract – *Pure vanilla* (not imitation) for the best flavor.
- Baking soda – The lift that keeps these thick and tender.
- Salt – Balances the sweetness—*kosher salt* is ideal.
- Chocolate chips – Semi-sweet or dark for contrast against the sweet M&Ms.
- M&Ms – The colorful crunch! *Mini M&Ms* distribute better, but regular work too.
Substitutions & Swaps:
- No M&Ms? Use Reese’s Pieces or chopped candy bars.
- Nut-free? Swap peanut butter for sunflower seed butter.
- Gluten-free? Use certified GF oats.
Non-Negotiables:
- *Oats and peanut butter*—they’re the backbone of monster cookies. Don’t skip or substitute with flour.
- *M&Ms*—they’re iconic here, but press a few extra on top before baking for that bakery-style look.
Little Wins:
- Toast the oats lightly for a nuttier flavor.
- Chill the dough 30 minutes to prevent overspreading.
- Underbake slightly (they’ll firm up as they cool) for the perfect chew.
How to Make the Best Monster Cookie Baking Steps

- Beat in eggs one at a time, then add vanilla extract. Mixing eggs gradually helps emulsify the batter, creating a uniform dough. Watch out for overmixing, which can make cookies dense.
- Whisk together oats, flour, baking soda, and salt in a separate bowl. Combining dry ingredients first prevents clumps and guarantees even distribution of leavening agents.
- Gradually add dry ingredients to wet ingredients, mixing just until combined. Overmixing here can lead to tough cookies—stop when no flour streaks remain.
- Fold in chocolate chips, M&M’s, and any other mix-ins gently. This keeps add-ins intact for pockets of flavor.
Pro tip: Toss chocolate chips in a bit of flour to prevent sinking.
- Scoop dough into 2-tablespoon portions onto prepared sheets, spacing them 2 inches apart. For uniform cookies, use a cookie scoop or ice cream scoop.
- Bake for 10–12 minutes, until edges are golden but centers are still soft. They’ll firm up as they cool.
Rotate pans halfway for even browning if your oven has hot spots.
- Let cookies cool on the baking sheet for 5 minutes before transferring to a wire rack. This prevents breakage—they’re fragile when warm!
- Store in an airtight container for up to 5 days, or freeze dough balls for future baking.
Pro tip: Freeze unbaked dough for quick fresh cookies anytime.
Nutrition
These homemade monster cookies are packed with wholesome ingredients and delicious flavors. Here’s the nutritional breakdown per serving:
| Nutrition | Per Serving |
|---|---|
| Calories | 230 kcal |
| Carbohydrates | 30 g |
| Protein | 4 g |
| Fat | 10 g |
| Saturated Fat | 4 g |
| Cholesterol | 20 mg |
| Sodium | 120 mg |
| Fiber | 2 g |
| Sugar | 18 g |
Chef Tips
When making monster cookies, I recommend chilling the dough for at least 30 minutes before baking—this helps prevent spreading and keeps them thick and chewy.
Use a cookie scoop for evenly sized cookies and avoid overmixing the dough to maintain a soft texture.
Bake on parchment paper for easy removal and monitor them closely; they’re done when the edges are golden but the centers are still slightly soft.





