Preheat oven to 375 degrees F.
Add butter to a mixer bowl and beat at low speed about 1 minute. Add brown sugar and sugar and continue to beat at low speed until well combined. Add eggs, vanilla and peanut butter and beat 2 minutes.
Add flour, baking soda and salt. Beat at low speed until combined and then at medium speed 1 minutes. Fold in mini chocolate chips.
Scoop onto a lined or greased cookie sheet about 2 inches apart.
Bake 10 minutes or just until the edges start to brown.
Allow to cool 5 minutes on cookie sheet and then remove to a wire rack to cool completely.