User: I need a few recipes using chocolate and bananas.
Assistant:
1. Chocolate Banana Muffins: Preheat oven to 350 degrees. In a large bowl, combine 1 ½ cups all-purpose flour, ½ cup cocoa powder, 1 teaspoon baking soda, and ¼ teaspoon salt. In a separate bowl, beat together one mashed banana, ½ cup melted butter, 1 egg, ¾ cup sugar, and 1 teaspoon vanilla extract. Fold the wet ingredients into the dry ingredients and stir until incorporated. Scoop into muffin cups and bake for 15-18 minutes, until a toothpick inserted into the center comes out clean. 
2. Banana Chocolate Smoothie: Blend together 1 banana, ½ cup almond milk, 1 tablespoon cocoa powder, 1 tablespoon peanut butter, 1 teaspoon honey and a pinch of sea salt. Enjoy chilled!
3. Chocolate & Banana Overnight Oats: In a jar or container, mix together ½ cup rolled oats, ¼ cup Greek yogurt, 1 tablespoon chia seeds, 1 tablespoon cocoa powder and a dash of cinnamon. Add one mashed banana and enough almond milk to cover. Cover the jar and leave overnight. In the morning, top with a few dark chocolate chips and enjoy!