Chocolate Christmas Monster Cookies

INGREDIENTS

1 1/2 cups

creamy peanut butter

1 cup

packed brown sugar

1 cup

white sugar

1 stick

unsalted butter

2 oz

bittersweet chocolate, melted and cooled

3 tbsp

cocoa powder

large eggs

1 tbsp

vanilla extract

4 1/2 cups

old fashioned rolled oats

2 tsp

baking soda

1 cup

semi sweet chocolate chips

1 cup

red and green M & Ms, plus more for the top of the cookies