1. To make the bottom layer, mix the flour and sugar together.
2. Cut in the butter until crumbly.
3. Pack into an ungreased 9 x 13 pan.
4. Bake in a 350 degree F oven for about 10 minutes or until golden.
5. To make the top layer, stir all five ingredients together in a bowl.
6. Spoon over the bottom layer and spread.
7. Bake in a 350 degree F oven for about 25 to 30 minutes or until set and golden in colour.
8. Cool.