Ingredients
Method
- Heat the oven to 350F and grease an 8x8 pan.
- Whisk the flour, baking powder, and salt together.
- Cream the butter and sugar, then beat in the eggs and vanilla.
- Alternate adding the dry mix and milk, then spread half the batter in the pan.
- Mix the brown sugar and cinnamon and sprinkle half over the batter, then top with remaining batter and the rest of the swirl.
- Rub the streusel flour, butter, and a pinch of cinnamon into crumbs, scatter on top, and bake 30 to 35 minutes.
Notes
Swirl the batter gently with a knife for marbled layers.
