# What You'll Need:
→ Cake Base
01 - 2 cups all-purpose flour
02 - 1 cup granulated sugar
03 - 0.5 cup unsalted butter, softened
04 - 2 large eggs
05 - 1 cup sour cream
06 - 2 teaspoons vanilla extract
07 - 1 teaspoon baking powder
08 - 0.5 teaspoon baking soda
09 - 0.25 teaspoon salt
→ Cinnamon Streusel Topping
10 - 0.75 cup all-purpose flour
11 - 0.5 cup brown sugar, packed
12 - 1 teaspoon ground cinnamon
13 - 0.25 teaspoon salt
14 - 0.5 cup unsalted butter, melted
# Cooking Steps:
01 - Heat oven to 350°F. Grease a 9x13-inch baking pan with nonstick spray or butter.
02 - In a large bowl, beat softened butter and granulated sugar until light and fluffy. Blend in eggs one at a time, then add sour cream and vanilla extract. Sift together flour, baking powder, baking soda, and salt, then gradually incorporate into the wet mixture until just combined.
03 - In a medium bowl, combine flour, brown sugar, cinnamon, and salt. Stir in melted butter until a crumbly texture forms.
04 - Spread cake batter evenly into prepared pan. Sprinkle streusel mixture evenly over the top.
05 - Bake for 35–40 minutes, or until a toothpick inserted in the center comes out clean. Place pan on wire rack and allow to cool before slicing.
