H's Soft Chocolate Chip Cookies

After learning from and playing around with other recipes I love, I wanted to come up with a recipe using all butter instead of shortening or margarine. Looking to more natural ingredients and trying to help a friend in the process. Here is the fruits of my labors. The family seems to really enjoy them.

1  cup softened butter, room temp
1/4 cup olive oil
1/4 cup sugar
1  cup packed light brown sugar
1  tbsp pure vanilla
2 eggs
3 cups all purpose flour
1 tsp baking soda
12 oz semi-sweet chocolate chips

Preheat oven to 370 degrees. With mixer, blend butter, olive oil, sugar and brown sugar in mixing bowl. Mix in vanilla. Add eggs one at a time, blending well.  Add dry ingredients and mix well.  With large spoon, stir in chocolate chips. Place rounded spoonfuls of dough onto ungreased non-stick cookie sheet. Bake cookies for 8 minutes. Enjoy!