1. Preheat oven to 350°.
2. Line 3 baking sheets with parchment paper.
3. Weigh or lightly spoon flour into a dry measuring cup; level with a knife. Combine flour and next 5 ingredients (through eggs) in a large bowl. Beat with a mixer at medium speed until smooth. Stir in candy. Shape dough into 54 (3/4-inch) balls. Place balls 2 inches apart on prepared pans, flattening slightly with fingers.
4. Bake at 350° for 12 minutes or until edges are browned. Cool cookies on pans 2 minutes. Transfer cookies to wire racks; cool completely.