Everyone knows grandmothers make the best desserts, and this Grandma’s Mississippi Mud Cake is a perfect example. Rich, fudgy, and studded with marshmallows and chocolate, this Southern classic feels like a warm trip back to grandma’s kitchen.

This old-fashioned Mississippi Mud Cake is simple to make and uses common pantry ingredients. The steps are straightforward: mix, bake, top with marshmallows, and pour warm chocolate frosting over everything. It’s ooey-gooey comfort food that’s perfect for family gatherings or a cozy night in.
While the traditional recipe calls for all-purpose flour, substituting self-rising flour is an easy shortcut. It eliminates the need for separate baking powder and salt while delivering a tender, slightly denser crumb that suits this cake well.
Expect a dense, fudgy cake base topped with melty marshmallows and a glossy chocolate frosting. Add chopped nuts if you like a crunchy contrast—pecans are a classic Southern choice.