Cup of Yum
1. Cinnamon Streusel
2. 1 1/3 cups all-purpose flour
3. 3/4 cup light brown sugar packed
4. 1 tablespoon cinnamon
5. 1/2 teaspoon nutmeg
6. 3/4 cup butter melted
7. Cake
8. 1/2 cup butter room temperature
9. 1 cup sugar
10. 2 large eggs
11. 1 teaspoon pure vanilla extract
12. 1 cup all-purpose flour
13. 1/2 teaspoon baking powder
14. 1 teaspoon cinnamon
15. 1/2 cup sour cream

Cinnamon Streusel

1. Combine the flour, brown sugar, cinnamon, nutmeg, and butter in a medium bowl. Mix together with a fork until clumps are formed.

Cake

1. Preheat oven to 350° F. and grease a 9 X 9-inch pan with butter.
2. In a medium mixing bowl, whisk together the flour, baking powder, and cinnamon.
3. In a large mixing bowl, cream together the butter and sugar until light and fluffy, approximately 3 to 4 minutes.
4. Add the eggs and vanilla and mix well, scraping down the sides of the bowl as needed.
5. Add the flour mixture.
6. Add the sour cream or Greek yogurt and mix until well combined.
7. Pour half of the cake batter into the prepared pan and with an offset spatula, spread to cover the bottom.
8. Sprinkle half of the cinnamon streusel evenly over the cake batter.
9. Cover with remaining batter and then sprinkle again with the remaining streusel.
10. Bake for 30 - 35 minutes, until lightly browned and a toothpick inserted into the middle comes out with moist crumbs.Cool completely before slicing.