This playful baked dessert leans into the nostalgic flavors of a root beer float while using a frozen block of cream soda as the unexpected starting point. As the soda melts in the oven with a few pantry staples, it turns into a sweet, caramel-like sauce that bubbles up around a simple cake-like topping, giving you a spoonable dessert that tastes familiar, old-fashioned, and fun for a summer celebration such as National Root Beer Float Day.
Serve this warm with scoops of vanilla ice cream to echo the float inspiration, and if you like, add a drizzle of root beer syrup or a dusting of cinnamon for extra depth. It also pairs nicely with lightly sweetened whipped cream, fresh berries for contrast, or a cup of hot coffee if you are serving it after dinner.
5-Ingredient Oven Baked National Root Beer Float Day Dessert
Servings: 8
Ingredients
1 solid unthawed block frozen cream soda, about 12 to 16 ounces
1 box yellow cake mix, about 15.25 ounces
1/2 cup unsalted butter, melted
1 teaspoon vanilla extract
1/2 teaspoon ground cinnamon
Directions
1. Preheat the oven to 350°F and lightly grease an oven-safe roasting pan. Place the solid unthawed block of frozen cream soda in the center of the pan.
2. In a medium bowl, stir together the yellow cake mix, cinnamon, melted butter, and vanilla extract until the mixture is evenly moistened and crumbly.
3. Crumble the cake mixture evenly over and around the frozen cream soda block, covering the top and filling the pan in an even layer as much as possible.
4. Bake for 40 to 50 minutes, until the topping is golden and the cream soda has melted into a bubbling sauce around the edges. Let the dessert rest for 10 minutes before serving so the sauce thickens slightly.
5. Spoon into bowls and top with vanilla ice cream if desired. Serve warm.
Variations & Tips
Root Beer Version: For a stronger float flavor, replace the frozen cream soda with a frozen block of root beer. The finished dessert will be slightly darker and have more classic soda fountain character.
Spice Note: A small pinch of nutmeg along with the cinnamon adds a cream-soda-shop warmth that works especially well if you are serving the dessert with vanilla ice cream.
Texture Tip: Do not stir once the topping is added. Leaving the layers undisturbed helps the soda melt underneath and create the saucy base while the top bakes into a soft crust.
Pan Size Tip: A 9-by-13-inch roasting pan or similarly sized baking dish works best. If the pan is much smaller, the bubbling sauce may rise too high and bake unevenly.
Make It Richer: Add a drizzle of heavy cream over the crumb topping before baking if you want a softer, more pudding-like finish. It is not necessary, but it gives the dessert a fuller float-inspired character.