1 1/2 cups butter
2 1/2 cups brown sugar
1 Tbsp. vanilla
4 cups all-purpose flour
4 tsp. baking soda
1 tsp. salt
2 to 3 cups chocolate chips (depending on your preference)
1. Beat butter and brown sugar with electric mixer until light and fluffy. Beat in vanilla and eggs, 1 at a time, until thoroughly blended. Combine flour and next 2 ingredients; beat in to butter mixture until combined. Add in chocolate chips. Scoop dough out onto parchment paper-lined baking sheets.
2. Bake at 350° for 10 minutes. Cool in pans 10 minutes; remove to wire racks to cool completely.