Aunt Anne's Coffee Cake

Step 1
Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 9x13 inch pan. Make the streusel topping: In a medium bowl, combine 1/4 cup flour, 2/3 cup sugar and 1 teaspoon cinnamon. Cut in 1/4 cup butter until mixture resembles coarse crumbs. Set aside.

Step 2
In a large bowl, combine 2 cups flour, 3/4 cup sugar, baking powder and salt. Cut in 1/2 cup butter until mixture resembles coarse crumbs. Crack an egg into a measuring cup and then fill add milk to make 1 cup. Stir in vanilla. Pour into crumb mixture and mix just until moistened. Spread into prepared pan. Sprinkle top with streusel.

Step 3
Bake in the preheated oven for 25 to 30 minutes, or until a toothpick inserted into the center of the cake comes out clean. Allow to cool.