Black Rum and Molasses Chocolate Cake

By AislePrompt Editorial · Published 2026-06-22 · Updated 2026-06-22

A moist, rich chocolate cake infused with black rum and molasses, layered with a dark chocolate ganache for an indulgent dessert. This recipe, ready in about 60 minutes, layers all-purpose flour, unsweetened cocoa powder, baking soda into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 410 calories and feeds 8, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 1 3/4 cups all-purpose flour
• 3/4 cup unsweetened cocoa powder
• 1 1/2 tsp baking soda
• 1/2 tsp salt
• 3/4 cup unsalted butter, softened
• 1 1/2 cups granulated sugar
• 2 large eggs
• 1/3 cup black rum
• 1/4 cup molasses
• 1 cup buttermilk
• 1 tsp vanilla extract
• 1 cup dark chocolate chips
• 3/4 cup heavy cream

The bakeware we’d bake this in → Best Bakeware Sets in 2026: Top Picks + Buying Guide

Instructions

1. Step 1: Preheat oven to 350°F. In a medium bowl, whisk together 1 3/4 cups all-purpose flour, 3/4 cup unsweetened cocoa powder, 1 1/2 tsp baking soda, and 1/2 tsp salt; set aside.
2. Step 2: In a large bowl, beat 3/4 cup softened unsalted butter with 1 1/2 cups granulated sugar until light and fluffy, about 3 minutes. Add 2 large eggs one at a time, beating well after each addition.
3. Step 3: Stir in 1/3 cup black rum, 1/4 cup molasses, and 1 tsp vanilla extract until combined.
4. Step 4: Alternately add the dry ingredients and 1 cup buttermilk to the wet mixture in three parts, beginning and ending with the dry ingredients. Mix until just combined.
5. Step 5: Pour batter into a greased 9-inch round cake pan and bake for 35-40 minutes until a toothpick inserted in the center comes out clean. Let cool completely.
6. Step 6: For ganache, heat 3/4 cup heavy cream in a small saucepan until simmering, then pour over 1 cup dark chocolate chips in a bowl. Let sit 2 minutes, then stir until smooth and glossy. Spread ganache over cooled cake before serving.