Mayonnaise cake has been around for generations, born from practical home cooking when folks used what they had on hand to make something sweet and tender for the family table. This slow cooker version keeps that old-fashioned spirit alive with just four ingredients, turning a humble jar of thick creamy white mayonnaise, cake mix, water, and chocolate chips into a rich, moist dessert with hardly any fuss at all. It is the sort of recipe that feels right at home in a Midwestern kitchen, especially on a busy day when you want a little treat without heating up the whole house.
This cake is lovely served warm with a scoop of vanilla ice cream, a spoonful of whipped topping, or a dusting of powdered sugar. For a coffee break, pair it with a hot mug of black coffee or a cold glass of milk, and if you want to dress it up for company, a handful of fresh berries on the side makes it feel extra special without taking away from that cozy vintage charm.
4-Ingredient Slow Cooker Vintage Mayonnaise Cake
Servings: 8
Ingredients
1 box chocolate cake mix, about 15.25 ounces
1 cup thick creamy white mayonnaise
1 cup water
1 cup semi-sweet chocolate chips
Directions
1. Lightly grease the inside of a 4- to 6-quart slow cooker or line it with a slow cooker liner for easier cleanup.
2. In a large mixing bowl, stir together the chocolate cake mix, mayonnaise, and water until the batter is smooth and well combined.
3. Fold in the chocolate chips, then pour the batter into the prepared slow cooker and smooth the top.
4. Cover and cook on High for 2 to 2 1/2 hours, or until the center is set and a toothpick comes out with moist crumbs.
5. Turn off the slow cooker, let the cake rest uncovered for 15 to 20 minutes, then scoop or slice and serve warm.
Variations & Tips
Make it extra chocolatey: Stir in a few extra chocolate chips if you want little pockets of melted chocolate throughout the cake. That is especially nice when serving it warm with ice cream.
Use a yellow or spice cake mix: If chocolate is not your family's first choice, this old recipe style also works with yellow cake mix or spice cake mix. The mayonnaise still keeps the crumb tender and soft.
Do not overcook: Slow cookers can vary quite a bit, so start checking early. You want the center just set; if it cooks too long, the edges can become dry.
Cool slightly before serving: Letting the cake stand uncovered for a few minutes helps steam escape so the top does not get overly wet. It also makes the texture easier to scoop and serve neatly.