Place all ingredients in large mixing bowl. Blend with electric mixer on low speed until well blended. Dough will be thick and come together in a ball. Divide dough in half. With one half of dough shape into a rectangle about 14"x 2.5" thick. Mound the dough so it is slightly higher in the center. Repeat with other half of dough. You can bake both on one cookie sheet place them about 4" apart. Bake first time in oven for 30-35 min. Until toothpick inserted in center comes out clean, Remove from oven and let cool for 10 minutes. Cutting on the cookie sheet use a sharp serrated knife and slice the rectangle on a diagonal into 34 inch inch thick slices. Carefully turn slices on their side, arranging on the cookie sheet. Bake cookies for second bake for 10 minutes. Remove from oven and let cool on cookie sheet. When cookies are cool drizzle with melted candy melts then sprinkle with chopped M&M's® White Peppermint candies. Let candy harden. Store in an air tight container.