Classic favorite—only 3 ingredients and foolproof every time

This 3-Ingredient Vanilla Pudding Cake is an easy, pudding-topped sheet cake that turns out incredibly moist and flavorful. Splitting the batter between two square pans creates extra surface area for the smooth pudding layer. It’s an excellent make-ahead dessert, as chilling allows the cake to soak up some of the pudding for a soft, melt-in-your-mouth texture.

3-Ingredient Vanilla Pudding Cake Ingredients

Main Components

• Vanilla cake mix — 1 box (about 15.25 oz)
• Instant vanilla pudding mix — 2 boxes (3.4 oz each)
• Cold milk — 4 cups

Additional Items

• Ingredients listed on the cake mix box (eggs, oil, water)
• Nonstick spray or butter, for greasing

Instructions

1. Prepare the Oven and Pans

Preheat the oven to the temperature specified on the cake mix package, typically 350°F. Grease two 8×8-inch baking pans with nonstick spray or butter.

2. Make the Cake Batter

Prepare the cake mix according to the package directions, stirring just until smooth without overmixing.

3. Bake and Cool

Divide the batter evenly between the prepared pans. Bake for 20–30 minutes, or as directed on the box, until a toothpick inserted in the center comes out clean. Allow the cakes to cool completely on a wire rack.

4. Prepare the Pudding

In a bowl, whisk the pudding mixes with the cold milk for about 2 minutes, until smooth and slightly thickened.

5. Assemble the Cake

Pour half of the pudding over each cooled cake and spread evenly to the edges using a spatula.

6. Chill and Serve

Cover the pans and refrigerate for at least 30 minutes to set. Cut into squares and serve chilled.