Source: Grandma's Cookie Jar Cookbook
2 c. all-purpose flour
2 tsp. baking powder
2 c. granulated sugar
1/2 c. (1 stick) butter or margarine
4 sqaures (1 ounce each) unsweetened baking chocolate, chopped
4 large eggs, lightly beaten
2 tsp. vanilla extract
1 3/4 c. M&M chocolate mini baking bits
Additional granulated sugar
Combine flour and baking powder; set aside. In 2-quart saucepan over medium heat combine 2 cups sugar, butter and chocolate, stirring until butter and chocolate are melted; remove from heat. Gradually stir in eggs and vanilla. Stir in flour mixture until well blended. Chill mixture 1 hour. Stir in M&M's; chill mixture an additional 1 hour.
Preheat oven to 350. Line cookie sheets with foil. With sugar-dusted hands, roll dough until 1-inch balls; roll balls in additional granulated sugar. Place about 2 inches apart on prepared cookie sheets. Bake 10 to 12 minutes. Do not overbake. Cool completely on wire racks. Store in tightly covered container.