Crust:

1/4 lb. butter
6 tbsp. sugar
2 eggs
2 c. flour
1 tsp. baking powder

Filling:

2 (8 oz.) pkg, cream cheese, softened
1 1/4 c. sugar
1/4 c. flour
4 eggs
juice of 1 lemon
3 c. milk

Cream butter and 6 tablespoons sugar; beat in eggs. Add 2 cups flour and baking powder. Mix well. Pat into 9 x 13 x 2 1/2-inch pan.

Mix together remaining ingredients and beat well until smooth. Pour into crust; sprinkle with cinnamon.

Bake at 300°F for 1 1/2 hours. Chill well before serving.