This Chocolate Mocha Cake is a timeless dessert that blends rich cocoa with the tang of sour milk for a tender, moist crumb and deep, balanced flavor. Originating from an era when baking from scratch was a weekend ritual, this cake carries nostalgic charm while remaining perfect for modern kitchens. The light, airy texture pairs beautifully with a creamy mocha frosting or can be served plain with a dusting of powdered sugar. Whether enjoyed with coffee, as an afternoon treat, or as a celebratory dessert, this cake delivers classic homemade goodness.
Ingredients
- 1 egg
- 1 cup sugar
- ½ cup sour milk (or buttermilk)
- ½ cup butter (softened)
- 1 tsp baking soda
- 1 ½ cups all-purpose flour
- 3 tbsp cocoa powder
- 1 tsp vanilla extract
Instructions
Step 1: Cream Butter & Sugar
- In a mixing bowl, cream together the butter and sugar until light and fluffy.
Step 2: Add Egg
- Beat in the egg until fully incorporated.
Step 3: Mix Cocoa & Sour Milk
- In a small bowl, dissolve the baking soda and cocoa powder into the sour milk.
Step 4: Combine Wet & Dry Ingredients
- Add the cocoa mixture to the creamed butter and sugar.
- Gradually work in the flour, mixing slowly until smooth.
Step 5: Add Vanilla
- Stir in the vanilla extract.
Step 6: Bake
- Pour batter into a well-greased shallow pan.
- Bake in a slow oven (approx. 325°F / 165°C) for 35–40 minutes, or until a toothpick inserted comes out clean.
Tips
- A “slow oven” traditionally means about 300 to 325°F; start checking for doneness at 30 minutes.
- If you don’t have sour milk, add 1 tablespoon vinegar or lemon juice to milk and let stand 5 minutes.
- Add 1 to 2 teaspoons instant coffee or espresso powder to enhance the mocha flavor.
- Frost with chocolate or coffee-flavored buttercream for a true mocha finish.
- Bake in an 8×8-inch or 9×9-inch shallow pan for best results, as indicated on the card.
- Line the pan with parchment for easier removal and cleaner slices.
- Do not overmix after adding flour, mix just until incorporated for a tender crumb.
- Add chopped walnuts or pecans for texture if desired.
- Dust with powdered sugar if you prefer to skip frosting.
Nutrition
Calories: 280kcalCarbohydrates: 37gProtein: 3gFat: 14gSaturated Fat: 8gPolyunsaturated Fat: 1gMonounsaturated Fat: 4gCholesterol: 55mgSodium: 160mgPotassium: 120mgFiber: 2gSugar: 25gVitamin A: 310IUCalcium: 35mgIron: 1.4mg
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