Ingredients
Equipment
Method
Step-by-Step Instructions
- Preheat your oven to 180°C (350°F) and grease an 8-inch square baking pan.
- In a small bowl, combine the flour, light brown sugar, ground cinnamon, and a pinch of salt. Mix with melted butter until coarse crumbs form. Set aside.
- In a large mixing bowl, beat room temperature butter and sugar together until light and fluffy, about 3-4 minutes. Add the egg, egg yolk, sour cream, and vanilla extract.
- Sift together all-purpose flour, baking powder, baking soda, and salt in a separate bowl. Gradually fold this dry mixture into the wet ingredients.
- Pour batter into the prepared pan. Sprinkle streusel topping generously over the batter, swirling slightly.
- Bake for about 30 minutes. Check doneness with a toothpick. Cool in the pan on a wire rack.
Nutrition
Notes
Ensure ingredients are at room temperature for best results. Avoid overmixing for a tender cake texture.
