Cream together butter and sugar in a stand mixer or electric hand mixer. Add eggs one at a time.
Add vanilla and cocoa. Mix together until combined.
Add flour one cup at a time and mix until combined.
Grease a 12-count muffin tin and distribute batter evenly amongst all the cups. Bake 15-17 minutes. Serve warm or allow to cool completely.
Remove brownie cups from the muffin tin and top each one with a scoop of Blue Bunny® Mint Chocolate Chip ice cream. Drizzle with chocolate sauce and serve.