Step 1

Heat oven to 325°F.

Step 2

Beat cake mix, whole egg, oil, chocolate and food coloring in large bowl with mixer until blended.

Step 3

Roll dough into 32 balls, using about 1 Tbsp. dough for each ball.

Step 4

Place balls, 1 inch apart, on baking sheets sprayed with cooking spray. Press your thumb into center of each ball to make indentation. Bake 10 min.

Step 5

Meanwhile, beat cream cheese and sugar in medium bowl with mixer until blended. Add egg yolk; mix well.

Step 6

Spoon cream cheese mixture into centers of cookies, adding about 1/2 tsp. cream cheese mixture to each cookie.

Step 7

Bake cookies additional 10 to 12 min or until centers are set. Cool 3 min. Remove cookies to wire racks; cool completely.