Preheat oven to 350F.

With mixer on medium-high, beat peanut butter, egg, 3/4 cup granulated sugar, brown sugar, baking soda and vanilla until well combined.

Stir in mini chocolate chips.

Shape into 1-inch balls (about 1 Tablespoonful each) and roll in remaining 1/4 cup granulated sugar, evenly coating all sides.

Arrange 3 inches apart on baking sheet. Using the flat bottom of a glass, gently press each ball into a circle about 1 1/2-inches in diameter. Using tines of a fork, make indentations in tops of cookies.

Bake until edges are firm, about 10 minutes. Cool 2 minutes on baking sheet. Transfer to wire rack and cool completely...or eat warm if you just can't wait!