Preheat and Prepare Pan: Preheat oven to 325°F. Line a sheet pan with parchment paper.
Mix Wet Ingredients: In a large bowl, whisk together egg, buttermilk, oil, and vanilla until smooth.
1 large egg, ½ cup buttermilk, ¾ cup vegetable oil, 1 teaspoon vanilla extract
Add Dry Ingredients: Add sugar, flour, cocoa powder, and salt. Mix until just combined. Stir in red food coloring until evenly distributed.
1 cup granulated sugar, 1 ¼ cups all-purpose flour, 1 tablespoon cocoa powder, 1 teaspoon salt, ½ teaspoon red gel food coloring
Activate Leavening: In a small bowl, combine baking soda and vinegar. Once it fizzes, immediately fold into the batter.
1 teaspoon baking soda, 1 tablespoon white vinegar
Bake Cake: Spread batter evenly in prepared pan. Bake for 20 minutes or until a toothpick inserted in the center comes out clean. Cool completely.
Make Frosting: Beat cream cheese and butter until smooth. Add powdered sugar and vanilla. Mix slowly at first, then beat 2 to 3 minutes until fluffy.
½ cup cream cheese, ⅓ cup unsalted butter, 4 cups powdered sugar, 1 teaspoon vanilla extract
Create Cake Mixture: Crumble cooled cake into fine crumbs. Measure about 9 cups. Add 1½ cups frosting and mix by hand until the mixture holds its shape when pressed. Adjust slightly if needed.
About 9 cups red velvet cake crumbs, 1 ½ cups cream cheese frosting
Coat Mold: Melt candy melts or chocolate in 30-second intervals, stirring between each. Spoon into each mold cavity and push coating up the sides. Invert mold over a bowl to remove excess.
12 ounces candy melts or white chocolate
Insert Sticks and Chill: Insert popsicle sticks while coating is still soft. Refrigerate 5 minutes until set.
Fill Molds: Press cake mixture firmly into each cavity, making sure to pack it under the stick. Leave a small gap at the top.
Seal Cakesicles: Rewarm coating if needed. Spread a thin layer over each cavity to seal. Smooth excess. Refrigerate 10 minutes until fully set.
Unmold and Decorate: Carefully remove from mold. Drizzle additional melted coating and add sprinkles before it sets.
Mother’s Day sprinkles
Storage: Because of the cream cheese frosting, store in an airtight container in the refrigerator up to 5 days. Let sit at room temperature 45–60 minutes before serving for best texture.