Lunch Lady Bars

I've been looking for years for a recipe similar to the chocolate chip bars that my high school cafeteria would serve. They were very soft and moist and tasted completely different than any other cookie I'd ever had or made. I think I've finally found something close! The recipe is from allrecipes.com . I stumbled upon it when I wanted to make cookies, but had no butter. I read in the reviews that someone preferred them as bars, so that's what I did. When I took my first bite, I realized they had a strong resemblance to the lunch lady bars! I've made a few changes of my own and they are noted below.
You can substitute 1/2 of the flour for wheat flour successfully, but they will not taste quite as lunch lady-esque.

Lunch Lady Bars
2 1/2 c. Flour
1 t. soda
3/4 t. salt
1 c. oil
1 c. brown sugar
1/2 c. granulated sugar
2 eggs
1 t. vanilla
1 c. mini semi-sweet chocolate chips

Combine dry ingredients. Set aside. In bowl mix together oil and sugars. Add eggs one at a time. Add vanilla. Gradually add dry ingredients. Mix in 3/4 c. of chocolate chips. Spread into 9x13 pan. Sprinkle remaining 1/4 c. chips on top. Bake at 350 for 15-25 minutes or until light golden brown.