Chunky Monkey Bars are soft, banana-packed dessert bars loaded with melty chocolate chunks and crunchy toasted walnuts - and your house will smell incredible while they bake! Perfect for sharing, these easy-to-make treats deliver classic banana bread flavor in a rich, bar-style bite that’s great for parties, potlucks, or snacking.
1 1/2 cups all purpose flour
1/2 teaspoon baking soda
1/2 teaspoon salt
3/4 cup packed brown sugar
1/2 cup unsalted butter, softened
1/4 cup granulated sugar
2 large eggs
1 cup mashed bananas (from 3 ripe bananas)
1/2 cup sour cream
1 teaspoon vanilla extract
1 1/2 cups semisweet chocolate chunks, divided
3/4 cup chopped toasted walnuts, divided
Preheat the oven to 350 degrees F (175 degrees C). Lightly grease a 10x15x1-inch baking pan.
Whisk together flour, baking soda, and salt in a bowl; set aside.
Beat brown sugar, butter, and granulated sugar in a large bowl with an electric mixer until smooth and creamy.
Add eggs 1 at a time, beating well after each addition. Mix in mashed bananas, sour cream, and vanilla until well combined.
Gradually add the flour mixture to the batter, stirring just until combined.
Fold in 1 1/4 cups chocolate chunks and 1/2 cup chopped walnuts.
Spread batter evenly into the prepared pan.
Top with the remaining 1/4 cup chocolate chunks and 1/4 cup chopped walnuts.
Bake until a toothpick inserted into the center comes out clean, 20 to 25 minutes.
Cool completely in the pan on a wire rack, about 30 minutes. Cut into 24 bars.
