Do a search for Monster Cookies and you will find many different variations for them. While all monster cookies should have the four core ingredients of peanut butter, oatmeal, chocolate chips and M&Ms, they often have a myriad of mix-ins. Colorful M&Ms are what give the cookies their added monster appeal. These cookies stay true to the four core ingredients, but they also include sweetened shredded coconut, mini-M&Ms (or mini chocolate chips) and butterscotch chips. The combination of all of those ingredients makes for an even thicker, chewier, delicious monstrous cookie!
I used both regular sized milk chocolate M&Ms as well as mini milk chocolate M&Ms. If you can't find the mini-M&Ms, use mini chocolate chips. If you like an even more peanut buttery flavor use peanut butter filled M&Ms instead of the regular milk chocolate M&Ms. Using holiday colored M&Ms certainly makes for an even more inviting, beautiful cookie, but the mere presence of even the regular colored M&Ms will still give this cookie it's 'wow' factor.
The recipe yields 12 monster cookies! Large enough to share or the perfect size to indulge your sweet tooth!
Cookies made with peanut butter can sometimes have the tendency to spread if baked immediately after the dough is assembled. To prevent a significant spread and ensure the cookie will have some heft to it, the dough should be scooped into balls and chilled for at least 24 hours. Although you will get an even thicker cookie if you chill the dough in the refrigerator for 48 hours. Note: You bake half the cookies after 24 hours and the other half after 48 hours to decide for yourself which length of chill time you prefer.
Before baking, sprinkle the cookies with some flaky sea salt as well as press a few more M&Ms into the top of the cookies! Baking time ranges from 16-18 minutes or until the edges are golden (the center may appear to be soft). Allowing the cookie to rest on the warm baking sheet after it's removed from the oven prevents overbaking and ensures the cookies chewy texture.
To get that beautiful bakery look finish to your cookies, use a small glass bowl or large round cookie cutter to round out the edges of the cookies as soon as they come out of the oven. Just as you wouldn't consider going out of the house without at least brushing your hair, rounding out the cookies gives them that same kind of finishing touch. A platter of beautifully rounded cookies will always be the one everyone gravitates towards.
There are several recipes for 'large' sized cookies on the blog using some similar ingredients. There are the Bakery Style Ranger Cookies, Cowboy Cookies, and Butterscotch, Oatmeal and Coconut Cookies, however, the ingredients as well as ingredient ratios in these cookies differ from those. Which means you need to put them on your MUST MAKE list! Other than someone having great powers of restraint, who could possibly resist a cookie made with colorful M&Ms? And, heck, who knew that the addition of M&Ms could make cookie monsters of many of us!
M&Ms have a pretty good shelf life. During the holidays, pick up some extra bags of the colorful holiday M&Ms. A gift of pink and red M&Ms filled Monster Cookies would be fun to give year-round, not just at Valentine's Day.
Recipe
Monster Cookies - The Valentine's Version
Makes 12 monster cookies
Ingredients
1 cup (130g) all-purpose flour
1/4 teaspoon baking powder
3/4 teaspoon baking soda
1/2 teaspoon Kosher salt
1 1/4 cups (112g) old-fashioned oats
1/2 cup (113g) unsalted butter, room temperature
1/2 cup (110g) light brown sugar
1/3 cup + 1 Tablespoon (80g) granulated sugar
1/2 cup (130g) creamy peanut butter (e.g., JIF)
1 large egg, room temperature
1 large egg yolk, room temperature
1 Tablespoon vanilla
1/2 cup (40g) sweetened coconut flakes
1/2 cup (85g) mini-M&Ms or mini chocolate chips
1/3 cup (57g) butterscotch chips
1/2 cup (80g) to 3/4 cup (120g) milk chocolate M&Ms (Valentine Holiday)
1/2 cup (85g) dark chocolate or semi-sweet chocolate chips (see notes)
Flaky sea salt (e.g., Maldon Sea Salt)
Directions
1. In a medium sized bowl, whisk together the flour, baking powder, baking soda and Kosher salt. Set aside.
2. In the bowl of a standing mixer fitted with a paddle attachment, briefly cream the unsalted butter.
3. Add in the light brown sugar and granulated sugar. Beat until creamy (about 2-3 minutes).
4. Add in the peanut butter. Mix until well blended.
5. Add in the egg and egg yolk. Mix until well blended.
6. Mix in the vanilla.
7. Add in the dry ingredients. Mix until blended.
8. Add in the coconut, mini-M&Ms, butterscotch chips, Holiday M&Ms, and chocolate chips. Mix to ensure ingredients are well distributed. Remove the bowl from the mixing stand. Use a spatula to scrape the sides and bottom of the dough before scooping out with a cookie/ice cream scoop. You want to make sure the dough is well blended.
9. Using a 2 1/4" inch sized cookie/ice cream scoop (I use the one made by Piazza), form 12 balls of dough (or form balls the size of large golf balls). Place on a small baking sheet. Cover well with plastic wrap and chill overnight or up to 2 days.
10. Preheat oven to 350 degrees (F). Line two baking sheets with parchment paper. Place 5 to 6 of the chilled cookies on a baking sheet. Sprinkle with flaky sea salt. Note: You can and should press some additional M&Ms into the cookies before baking to ensure their colorfulness!!!
11. Bake for 16 to 18 minutes (the edges should be golden). Remove from the oven. Using a small bowl or large round cookie cutter, round out the edges of the cookies while the cookies are still warm. Let the cookies rest on baking sheet for 10 minutes before removing to a cooling rack.
12. Finish baking the remaining cookie dough balls.
13. Eat the cookies warm or wrap in cellophane or glassine bags. Store at room temperature. The cookies will be fresh for 4-5 days. You can also reheat the cookie in the microwave on high for 12 seconds to give it that fresh baked warm flavor.
Notes: (1) I like using the Guittard Semi-Sweet Dark Chocolate Super Cookie Chips. (2) You can make these cookies year-round with milk chocolate M&Ms. Use the regular bag of M&Ms or the holiday bags of M&Ms. (3) I use a stainless cookie scoop made by Piazza. It is much sturdier and easier to use than the one made by OXO. (4) The cookies are chilled in order to prevent their spread and keep their height. The cookies baked after 2 days of chilling were much more 'monster' like!
2026 is the year of Horse. Photo taken in Door County, Wisconsin.




















