Peanut Butter M&M Cookies are soft, chewy and packed with peanut butter flavor! Our favorite peanut butter cookie recipe is even better with Peanut Butter M&Ms!
With a hand mixer, cream together the peanut butter, butter, white sugar and brown sugar until blended. Beat in the egg, milk, and vanilla.
Combine the flour, baking powder and salt in a separate bowl. Add flour mixture to the peanut butter mixture and mix together.
Stir in the crushed Peanut Butter M&Ms. Scoop tablespoonfuls of dough and roll into balls.
Place cookies 2 inches apart on ungreased cookie sheets (I used parchment paper since my cookies tend to burn on my darker pans). Press each ball once with a fork.
Bake for 8-10 minutes. Don't overcook! These cookies are much better soft and just barely cooked all the way through!
Let the cookies cool on the cookie sheet for a few minutes before transferring to a wire rack to cool completely.
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Notes
*Every time I have made these cookies I have used a regular creamy peanut butter (like Jif or a store-brand alternative). Several readers have commented that the cookies do not turn out as well when using a natural peanut butter.