Banana Coffee Cake with Chocolate Chip Streusel

This recipe comes from Bon Appetit. Make sure you use very ripe bananas for this one to give it lots of flavor!

• Ready In: 1 hr 10 mins
• Serves: 12

Ingredients

• 1 1⁄4 cups  semi-sweet chocolate chips (about 8 ounces)
• 2⁄3 cup  packed golden brown sugar
• 1⁄2 cup  chopped walnuts
• 1  tablespoon ground cinnamon
• 1 1⁄2 cups all-purpose flour
• 3⁄4 teaspoon baking soda
• 3⁄4 teaspoon baking powder
• 1⁄4 teaspoon salt
• 3⁄4 cup sugar
• 1⁄2 cup unsalted butter, room temperature
• 1  large egg
• 1 1⁄3 cups  mashed very ripe bananas (about 3 large)
• 3  tablespoons buttermilk

Directions

1. Preheat oven to 350°F.
2. Butter and flour 8x8x2-inch metal baking pan.
3. Stir chocolate chips, brown sugar, walnuts, and cinnamon in small bowl until well blended; set streusel aside.
4. Sift all purpose flour, baking soda, baking powder, and salt into medium bowl.
5. Using electric mixer, beat sugar, room temperature butter, and egg in large bowl until fluffy.
6. Beat in mashed bananas and buttermilk.
7. Add dry ingredients and blend well.
8. Spread half of batter (about 2 cups) in prepared baking pan.
9. Sprinkle with half of streusel.
10. Repeat with remaining batter and streusel.
11. Bake coffee cake until tester inserted into center comes out clean, about 45 minutes.
12. Cool coffee cake in pan on rack.