Prep Your Slow Cooker: Line the bowl with two strips of parchment paper in an ‘x’ and spray generously with cooking spray. Trust me, this makes lifting the bread out ridiculously easy.
Mix Wet Ingredients: In a large bowl, whisk together melted butter, granulated sugar, brown sugar, eggs, and vanilla until smooth. Stir in the mashed bananas.
Add Dry Ingredients: In a separate bowl, mix the flour, baking powder, baking soda, cinnamon, and salt. Gently fold the dry mixture into the wet ingredients until just combined. Don’t overmix—it’ll stay fluffy this way!
Add Chocolate Chips: Stir in 1 1/2 cups of chocolate chips. Reserve a handful to sprinkle on top.
Cook: Spread the batter evenly in your slow cooker and sprinkle the reserved chocolate chips on top. Cover and cook on low for 4 hours.
Cool and Serve: Let the bread sit in the slow cooker for 10 minutes after cooking. Use the parchment handles to lift it out, slice, and serve warm.