A delicious thumbprint cookie that tastes exactly like a Twix! A shortbread layer, a caramel filled center and chocolate drizzled on top! Shortbread Layer: ⅔ cup Unsalted Butter, softened ½ cup sugar 2 Eggs (yolks only) 1 teaspoon vanilla 1½ cups all-purpose flour Caramel Filling: 14 soft caramel candies (like Kraft Caramels) 3 T. heavy cream Chocolate Drizzle: 6 ounce milk chocolate chips To make the shortbread layer: Preheat oven to 375 degrees. In a medium sized bowl, combine ⅔ cup butter, sugar, egg yolks and vanilla in bowl. Beat at medium speed, scraping bowl often, until creamy. Add flour; beat at low speed until well mixed. Cover and refrigerate at least 1 hour or until firm. Shape dough into 1-inch balls. Place 2 inches apart onto ungreased cookie sheets. Make indentation in center of each cookie with thumb or end of wooden spoon handle. Bake 7-10 minutes or until edges begin to brown. Cool completely. To make the caramel filling: Melt the caramel and heavy cream in the microwave stirring every 30 seconds until it is fully melted. Using a teaspoon fill each indentation with the caramel. To make the chocolate drizzle: Melt the chocolate in the microwave stirring 30 seconds at a time until smooth, and scoop into a ziplock bag. Barely snip the corner and drizzle over the cookies.