Ingredients:
For the Cake:
- 1/2 cup (115g) unsalted butter, softened
- 1 cup (200g) granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- 2 cups (250g) all-purpose flour
- 1 teaspoon baking powder
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1/2 cup (120ml) sour cream or plain yogurt
- 1/4 cup (60ml) milk
For the Crumb Topping:
- 1/2 cup (100g) brown sugar
- 1/2 cup (65g) all-purpose flour
- 1 teaspoon ground cinnamon
- 1/4 cup (60g) unsalted butter, melted
For the Glaze (Optional):
- 1/2 cup (60g) powdered sugar
- 1-2 tablespoons milk or cream
- 1/2 teaspoon vanilla extract