Easy Cream Cheese Brownies

This is what I make when I have leftover cream cheese, usually from making Unstuffed Shells the night before.

Brownie layer (same as Never Fail Brownies):

1/2 cup margarine
1 c. sugar
2 eggs
1/4 tsp. salt
1/2 tsp. vanilla
1/2 c. flour
1/2 c. cocoa

Cream Cheese layer:

4 oz cream cheese (I usually use a little more)
1 egg
1/2 c. sugar
2 T flour
1/2 c. chopped walnuts (optional)

Mix brownie and pour into an 8x8 square pan. Mix cream cheese layer and pour over top. Swirl the cream cheese into the brownies a little with a knife. Bake for 35 minutes at 350.