Carmel Apple Cheesecake Bars with Streusel Topping

I made these to treat my co workers for my birthday. They were a hit. I was asked many times for the recipes. I caved and tasted a sliver of one. It was tasty.
I found this on the Internet. I think Paula Dean.
Crust
2 c. flour
1/2 c. brown sugar
2 cubes butter
Combine flour and brown sugar. Cut in butter. (I used Imperial). Press in bottom of a 9X13 pan that has been lined with foil. Bake 350* for 15 minutes.
Filling
2 pkg. cream cheese (I used low fat)
1/2 c. sugar
2 large eggs
1 tsp. vanilla ( I used Mexican)
In a bowl, beat cream cheese and sugar until smooth. Add eggs one at a time. Add vanilla. Pour over warm crust
Filling Part 2
3 apples (it calls for Granny Smith but green apples from our Golden Delicious worked great)
2 TB sugar
1/2 tsp. cinnamon
1/4 tsp. nutmeg
Peel, core and finely chop the apples. Combine with sugar and spices. Sprinkle on top of the cream cheese filling.
Streusel Topping
1 c. flour
1.c brown sugar
1/2 c. oats
1/2 c (1 cube) butter
Cut together and sprinkle on top of the rest of the great stuff.
Bake 250* for 30 minutes.
Top with 1/2 c. Carmel ice cream topping....oh no! I forgot to add the Carmel topping...but it still tasted great.