Preheat oven to 350°F. Line the cookie sheet pans with the parchment paper.
Knead the flour into the cookie dough until smooth. Roll out the dough to a scant ¼-inch thickness. Cut out 18 cookies, re-rolling the scraps if necessary. Transfer the cookies to the prepared cookie sheet pans.
Bake for 12-17 minutes, or until golden brown. Remove from the oven, transfer to a wire rack, and let cool completely.
Spoon the frosting into a resealable plastic bag; snip a corner. Using the photo as a guide, pipe outlines on the cookies, then fill in the outlines with a tight zigzag pattern. Spread the frosting with a small spatula or table knife on about half the cookies to make it smooth.
Decorate with M&M'S® Brand Milk Chocolate Candies for Easter to make fun designs