"Lunch Lady Bars"

I have no idea why these are called Lunch Lady Bars and I can't remember where I found the recipe, but these were so good! These are kind of like a cookie cake, but even better.

2 1/2 cups flour
1 teaspoon baking soda
3/4 teaspoon salt
1 cup oil
1 cup brown sugar
1/2 cup granulated sugar
2 eggs
1 teaspoon vanilla
1 cup mini semi-sweet chocolate chips, divided

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