Sunday Morning Coffee Cake

Ingredients

• 2 cups all-purpose flour
• 3/4 cup white sugar
• 2 teaspoons baking powder
• 1/2 teaspoon salt
• 1/2 cup butter
• 1 egg
• 3/4 cup milk, or as needed
• 1 1/2 teaspoons vanilla extract 

Crumble topping

• 1/2 cup all-purpose flour
• 1 1/3 cup brown sugar
• 2 teaspoon ground cinnamon
• 1/2 cup butter

Directions

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 butter until mixture resembles coarse crumbs. Set aside.
2. Combine ingredients. Crack an egg into a measuring cup and then fill add milk to make 1 cup. Stir in vanilla.  Spread into prepared pan.
3. put half of the crumble topping ontop of the batter and fold into top half of mixture so that it is spread throughout the batter. Sprinkle top with remaining streusel.
4. 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.