
This old school Tomato Soup Cake recipe is a timeless dessert dating back to the 1930's using a can of condensed tomato soup. Our version is moist and tender, with a warming spice flavor, finished with a layer of creamy brown sugar frosting!
Preheat oven to 375 degrees F. Spray a 9x13 baking dish with nonstick cooking spray; set aside.
In medium bowl whisk together the flour, baking powder, baking soda, salt, and pumpkin pie spice. Set aside.
In large bowl with a handheld electric mixer, beat together the butter and sugar until light and fluffy, 2-3 minutes.
Add in the eggs, milk, and condensed tomato soup; beat until well blended.
Add in the flour mixture and beat again just until no flour streaks remain. Don't over-mix.
Fold in the raisins and walnuts.
Pour and spread evenly into prepared baking dish.
Bake the cake until a tester inserted in the center comes out clean, 30-35 minutes. Let the cake cool completely before frosting.
Make the frosting:With a handheld mixer, beat butter on medium speed for about 2 minutes or until creamy and lightened in color, scraping down the bowl as needed. Add brown sugar, vanilla extract, cinnamon, and salt until combined and smooth.
Add in powdered sugar, 1 cup at a time, until sugar is incorporated, scraping down the bowl several times to ensure everything is well blended.
Slowly beat in 3 tablespoons heavy cream, increasing speed to high and beating for 1 more minute until frosting reaches desired consistency. Add in more heavy cream, 1 tablespoon at a time, only if necessary. Frosting should be light and fluffy, and easily spreadable, but hold its shape.
Spread frosting over entire cake, cut into squares, and serve.