This 4-ingredient slow cooker vintage tomato soup cake is the kind of old-fashioned recipe that feels a little surprising at first and then totally makes sense after one bite. Tomato soup cake has been around for generations as a clever, budget-friendly dessert known for its moist texture and warm spice flavor, and making it in the slow cooker is an easy way to fit a homemade treat into a busy day without turning on the oven.
Serve this cake slightly warm with a dusting of powdered sugar, a spoonful of whipped cream, or a scoop of vanilla ice cream for an easy dessert that feels extra cozy. It also pairs nicely with coffee in the afternoon or as a simple finish to a comfort-food dinner, especially during fall and winter when those spice notes really shine.
4-Ingredient Slow Cooker Vintage Tomato Soup Cake
Servings: 8
Ingredients
1 (10.75-ounce) can condensed tomato soup
1 box spice cake mix
2 large eggs
1/2 cup melted unsalted butter
Directions
1. Lightly grease the insert of a 4- to 6-quart slow cooker. In a large mixing bowl, combine the condensed tomato soup, dry spice cake mix, eggs, and melted butter until the batter is smooth and evenly mixed.
2. Spread the batter evenly into the prepared slow cooker. Cover with the lid, placing a paper towel under the lid if your slow cooker tends to collect condensation.
3. Cook on high for 1 1/2 to 2 hours or on low for 3 to 4 hours, until the cake is set in the center and a toothpick inserted comes out with just a few moist crumbs.
4. Turn off the slow cooker and let the cake rest, uncovered, for 15 to 20 minutes so excess moisture can escape. Slice and serve warm, or let it cool completely before cutting into squares.
Variations & Tips
Add-ins: If you want a little more texture, stir in 1/2 cup raisins or chopped walnuts. Both are classic with old-fashioned spice-style cakes and work especially well here.
Frosting idea: For a more dessert-like finish, spread cream cheese frosting over the cooled cake. That tangy sweetness makes the spice flavor pop and gives it a very vintage potluck feel.
Slow cooker tip: Every slow cooker runs a little differently, so start checking early the first time you make it. If the edges cook faster than the center, switch to low and give it a little more time.
Make-ahead tip: This cake keeps well covered at room temperature for a day or in the refrigerator for a few days. I like to warm individual pieces for a few seconds before serving so they taste freshly made.