Coca Cola Marshmallow Cake with Nut Icing

This is the Southern sheet cake that lives in church potluck legends, born somewhere in 1950s Georgia kitchens when Coca-Cola was as common as flour. The cola does double duty: it adds a faint caramel sweetness to the batter, and the carbonation provides a little extra lift. The marshmallows melt during baking into chewy pockets throughout the crumb.

The pour-over icing technique is the move that separates this from any standard chocolate cake. The hot fudge glaze gets poured over the cake while both are still hot, allowing the icing to soak in slightly and form a glossy, fudgy crust as it cools. Pour cold or wait too long and you get an uneven set.

Don’t be alarmed by the thin batter. The flour-to-liquid ratio is correct. As the cake bakes, the marshmallows expand and the structure firms up, giving you a tall, tender sheet cake with that signature soft chocolate flavor.

Use mini marshmallows, not large ones. Mini melt evenly throughout the batter; large ones leave gaping holes in the cake.

Serve in generous squares straight from the pan. The cake is sweet enough that it doesn’t need ice cream, but a scoop of vanilla wouldn’t hurt anyone.

Pro Tips

• Use real Coca-Cola, not diet or zero. The sugar contributes to the cake’s structure.
• Pecans are traditional in the icing, but walnuts work too.
• Pour the icing while it’s still hot from the saucepan and the cake is fresh from the oven.
• Cool completely before slicing for the cleanest squares.
• Store covered at room temperature for 3 days or freeze 3 months.

Variations

• Substitute root beer or Dr Pepper for a different soda flavor.
• Add 1 teaspoon of cinnamon to the batter for a Mexican-chocolate vibe.
• Top with shredded coconut along with the nuts for a tropical twist.