1 package strawberry cake mix
3/4 cup shortening
8 oz. cream cheese, softened
1/4 cup (1/2 stick) unsalted butter, softened
2 teaspoons vanilla
4 cups confectioners' sugar
In a large bowl, with an electric mixer, combine cake mix, eggs, and shortening. Roll dough into balls.
Place two balls next to each other and pinch the bottom to create a heart. Bake at 350 degrees for 8 minutes.
My hearts came out a little round, so immediately after pulling them out of the oven, I used a spatula to push the sides flat a bit more. Immediately transfer to a rack to cool.
With an electric mixer, combine cream cheese and butter until smooth. Add vanilla. Slowly add sugar, one cup at a time, until creamy.
When cookies are cool, with an offset spatula, spread frosting onto back of one cookie side, and sandwich with a matching heart.