1. Preheat oven to 350F. Line an 8x8 baking pan with parchment paper.
2. Red Velvet Brownies: In the bowl of a stand mixer fitted with the paddle attachment, or a large mixing bowl, mix together butter, oil, sugar, and eggs until well blended. Add in flour, cocoa powder, salt, and red food dye. Mix until blended.
3. Pour batter into prepared pan.
4. M&M Cookies: In the bowl of a stand mixer fitted with the paddle attachment, or a large mixing bowl, mix together butter, sugars, and egg until well blended. Add in salt, baking soda, flour, and mix until combined. Stir in chocolate chips and M&Ms.
5. Scoop cookie dough by tablespoon measurements over top of brownie batter.
6. Cover with foil and bake 20 minutes, then remove foil and bake an additional 20 minutes, or until a toothpick inserted into the center comes out clean. Allow to cool before removing from pan and cutting. Enjoy!