Peach Coffee Cake with Streusel Topping

INGREDIENTS

1 cup

all-purpose flour

1/3 cup

packed brown sugar

1/3 cup

granulated sugar

1 1/2 tsp

cinnamon

7 tbsp

unsalted butter, melted

1 2/3 cups

all-purpose flour

1 tsp

baking powder

1/2 tsp

baking soda

1/4 tsp

salt

6 tbsp

unsalted butter, softened

3/4 cup

granulated sugar

1 1/2 tsp

vanilla extract

large eggs

1/4 cup

sour cream (or plain Greek yogurt), room temperature

1/3 cup

buttermilk, room temperature*

peaches, pealed & sliced

3 tbsp

cream or half-and-half

1 cup

powdered sugar