Thanks @andresfnl, you too!

Ingredients

1 cup (2 sticks butter), softened
1 cup sugar
1 cup packed brown sugar
2 eggs
2 teaspoons vanilla extract
1 teaspoon salt
1 teaspoon baking soda
1/4 cup peanut butter
3 cups all-purpose flour
3 cups rolled oats
3 tablespoons cocoa powder
1 cup peanut butter M&Ms
3/4 semi-sweet dark chocolate chips (or chopped chocolate)

Instructions

1. Pre-heat oven to 350 degrees F (180 C). Cream butter and sugars together in the bowl of stand mixer fitted with beater attachment. Beat in eggs one at a time. Add salt, soda, vanilla, and peanut butter and beat until smooth. Add flour one cup at a time, then oats and beat until evenly mixed.
2. Divide the dough in half and place one half in a separate bowl. Mix the cocoa powder into the half still in mixing bowl until combined. Add half of the M&Ms and half of the chocolate chips to each bowl of dough and stir until they are evenly distributed throughout the dough.
3. Roll or scoop the dough into 1 inch-ish (about 2 tablespoons each) balls and place on parchment lined cookie sheet about 2 inches apart. [For the double-sided ones, use a sharp knife to cut one ball of each flavor dough in half so that you have 4 half balls,(2 of each color). Alternate the colors by putting the chocolate halves with the plain halves so that you have 2 double-sided dough balls and place them back on the tray]
4. Use your palm to slightly press down the cookies and flatten tops. Bake for 8 - 10 minutes until edges are just beginning to brown. Remove from oven and leave on pan for about 5 minutes, then remove to cooling rack.