Yummy and gooey peanut butter bar cookies with festive Christmas M&M's!
Preheat oven to 350° degrees.
Cream the butter, peanut butter, and sugars until creamy and well mixed, approximately 5 minutes.
Add the eggs and blend till combined.
Add the baking powder and salt and mix till combined. Then add flour and mix till just combined.
Add the bag of Holiday M&M's and mix on slow till evenly dispersed.
Put your cookie batter into a 9x13 buttered dish and bake at 350 for 35-40 minutes, until the center is set and the edges are lightly browned.