Smearcase Cake

Cake
2 cups all-purpose flour
1/2 cup cooking oil
2 eggs
2 teaspoons baking powder
1 cup granulated sugar

Filling
16 ounces cream cheese
3/4 cup granulated sugar
1 1/2 teaspoons flour
3 eggs
1 1/2 teaspoons vanilla extract
1 (13 ounce) can evaporated milk or 1 1/2 cups sweet milk
Cinnamon

Sift dry ingredients for cake. Add eggs, oil and sugar; stir well. Press into a 13 x 9-inch pan. Spread cake dough in bottom and on sides. Make filling.