Classic Sour Cream Cinnamon Coffee Cake

Prep time: 20 mins | Bake time: 45-50 mins

Ingredients:

• Cake: 2 cups all-purpose flour, 1 tsp baking powder, 1 tsp baking soda, 1/2 tsp salt, 3/4 cup unsalted butter (softened), 1 cup granulated sugar, 2 large eggs, 1 tsp vanilla extract, 1 cup sour cream.
• Streusel & Filling: 1/2 cup packed brown sugar, 1/3 cup granulated sugar, 1 tbsp ground cinnamon, 1/4 cup cold unsalted butter (cubed), 1/2 cup chopped pecans or walnuts (optional).

Instructions:

1. Preheat oven to 350°F (175°C) and grease a 9×13-inch baking pan.
2. Mix the streusel ingredients together using a fork or pastry blender until coarse crumbs form. Set aside.
3. Whisk flour, baking powder, baking soda, and salt in a bowl.
4. In a separate large bowl, cream butter and sugar until fluffy. Beat in eggs one at a time, then add vanilla.
5. Alternate adding the dry ingredients and sour cream to the wet mixture just until combined.
6. Spread half the batter into the pan, sprinkle half the streusel over it, add the remaining batter, and top with the rest of the streusel.
7. Bake for 45–50 minutes until a toothpick inserted in the center comes out clean.