01 -
Set your oven to 350°F so it’s ready to go.
02 -
Combine sugars and butter in a bowl. Use a hand mixer on low or a stand mixer until it gets creamy. Add vanilla and eggs, mix again on low until it’s all blended. Put it aside for now.
03 -
In another big bowl, whisk together the flour, baking soda, cocoa powder, and salt. Slowly add this dry mix to the wet ingredients, about a cup at a time. Mix everything on a low setting until it all comes together.
04 -
Stir the mixtures together. It doesn’t need to be perfectly smooth—a few lumps are just fine.
05 -
Fold the M&Ms into the dough. The dough’ll be sticky and thick. Pop it in the fridge for 30-60 minutes to chill. If you’re baking in batches, keep the dough chilled in between.
06 -
Once chilled, the dough’ll feel like playdough—not sticky anymore. If it’s too hard, let it sit a few minutes at room temp. Take about 2 tablespoons of dough for each cookie and roll them into balls, about 2 inches wide. You should get 13-14 cookies.
07 -
Set the dough balls on a parchment-lined baking sheet. Leave about 2 inches of space between each one. Don’t smush them!
08 -
Pop the tray in the oven for 10-12 minutes. Baking time can vary, so keep an eye on them.
09 -
The cookies will look soft in the center when fresh out of the oven, but they firm up as they cool. Inside stays chewy and rich.
10 -
Let the cookies cool on the baking tray for 5-10 minutes before moving them to a wire rack to finish cooling completely.