Cinnamon-Laced Coffee Cake

Ingredients

• cooking spray
• 0.25 cup cinnamon sugar
• 1 cup firmly packed light brown sugar
• 0.75 cup chopped walnuts
• 0.25 cup butter, softened
• 0.25 cup all-purpose flour
• 2.5 teaspoons ground cinnamon
• 3 cups all-purpose flour
• 3.5 teaspoons baking powder
• 1 teaspoon salt
• 2 large eggs
• 1.5 cups white sugar
• 2/3 cup butter, melted
• 1 cup milk
• 0.25 cup sour cream
• 2 teaspoons vanilla extract

Steps

1. Preheat oven to 375 degrees F (190 degrees C). Spray a 9×13-inch baking dish with cooking spray. Sprinkle cinnamon sugar into the bottom of prepared baking dish.
2. Combine brown sugar, walnuts, softened butter, flour, and cinnamon for streusel mixture in a bowl; mix with a fork until crumbly.
3. Mix flour, baking powder, and salt for batter together in a separate bowl. Beat eggs in a third bowl using an electric mixer until frothy; add white sugar and melted butter and beat until creamy. Add milk, sour cream, and vanilla extract and beat until smooth. Stir flour mixture into milk-butter mixture until batter is well blended.
4. Spread 1/2 of the batter into the prepared baking dish; top with 1/2 of the streusel mix. Spread remaining batter over streusel layer and top with remaining streusel.
5. Place dish on the center rack in the preheated oven; bake until a fork inserted in the center comes out clean, 15 to 20 minutes.