Ingredients
Equipment
Method
Preheat oven to 350 degrees F. Grease and flour a 9-inch round pan.
Make streusel: mix flour, brown sugar, cinnamon, salt, work in cold butter until clumpy. Refrigerate.
Cream butter and sugar. Add eggs one at a time, then vanilla and sour cream.
Fold in flour, baking powder, baking soda, and salt until just combined.
Spread half the batter in pan. Top with cinnamon sugar mixture. Add remaining batter and spread to cover.
Scatter chilled streusel over the top. Bake 40 to 45 minutes until golden and a toothpick comes out with moist crumbs.
Cool in pan 20 minutes before slicing.
