One-Bowl Moist Chocolate Layer Cake

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A simple, moist chocolate cake made entirely in one bowl, perfect for layering with rich chocolate frosting. This american-inspired paleo ready in about 50 minutes pairs and 3/4 cups all-purpose flour, unsweetened cocoa powder, and 1/2 tsp baking powder for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 calories and feeds 12, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart.

★ 4.3 (15 ratings) Prep: 15 min Cook: 35 min Serves 12 American cuisine 350 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 350°F and grease two 9-inch round cake pans. In a large mixing bowl, combine 1 and 3/4 cups all-purpose flour, 3/4 cup unsweetened cocoa powder, 1 and 1/2 tsp baking powder, 1 and 1/2 tsp baking soda, 2 cups granulated sugar, and 1 tsp salt. Whisk together until evenly mixed.
  2. Step 2: Add 2 large eggs, 1 cup whole milk, 1/2 cup vegetable oil, and 2 tsp vanilla extract to the dry ingredients. Using a hand mixer or whisk, beat on medium speed for 2 minutes until the batter is smooth and glossy.
  3. Step 3: Carefully pour in 1 cup boiling water, stirring slowly until fully incorporated; the batter will be thin but this ensures a moist cake. Divide the batter evenly between the prepared pans.
  4. Step 4: Bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean. Let cakes cool in pans for 10 minutes, then transfer to wire racks to cool completely before frosting.

Frequently asked questions

How long does One-Bowl Moist Chocolate Layer Cake take to make?

Total time is about 50 minutes (15 min prep + 35 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover One-Bowl Moist Chocolate Layer Cake?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep unsweetened cocoa powder from drying out.

Can I substitute ingredients in One-Bowl Moist Chocolate Layer Cake?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale One-Bowl Moist Chocolate Layer Cake for a different number of people?

The recipe is written for 12 servings. Multiply each ingredient by (your serving target / 12). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with One-Bowl Moist Chocolate Layer Cake?

American paleo like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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