In a large bowl measure 1 ½ cup All Purpose Flour, ¾ cup Sugar and 2 teaspoons Baking Powder. Mix these dry ingredients together and then create a well in the center.
Add ¼ Cup Vegetable Oil, 1 Egg and ½ cup Milk. Using a large spoon combine ingredients until mixed. Batter will be thick like a muffin batter consistency.
Using an Apple Peeler, slice, peel and core apple then dice into small pieces.
Add 1 Tablespoon flour to apples and toss to combine. This helps keep the apples from sinking to the bottom of the cake.
Place cake batter into a 9×9 greased glass baking dish
Streusel Topping ~ In a separate bowl combine ⅓ cup Brown Sugar, 2 Tablespoons Flour, 1 ½ teaspoon Cinnamon and stir to combine mixing all ingredients together
Add 1 ½ Tablespoon melted butter and mix to combine. Mixture will be a wet crumble.
Drop crumble mixture on top of cake
Bake at 375 for 22-25 Minutes or until a toothpick in center of cake comes out clean