Cream together:

2/3 c. butter
1 c. brown sugar
2 c. flour
1/2 c. chopped nuts

Reserve 1 1/2 cups of this mix for topping. Pat rest in 9 x 13 pan. Bake at 350 degrees for 12 to 15 minutes.

Blend:

2 (8 oz.) pkg. cream cheese
1 c. sugar

Add:

2 eggs
1/4 c. milk
2 tbsp. lemon juice
1 tsp. vanilla

Spread cheese mixture over baked crust. Sprinkle on remaining crust crumbs. Bake 25 minutes.