One-Bowl Lemon Poppy Seed Mug Cake

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A quick, moist lemon poppy seed cake that cooks in the microwave in under 5 minutes, perfect for an individual dessert. This american-inspired desserts ready in about 7 minutes layers all-purpose flour, granulated sugar, baking powder 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 280 calories and feeds 1, 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.

Prep: 5 min Cook: 2 min Serves 1 American cuisine 280 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a microwave-safe mug, whisk together 4 tbsp all-purpose flour, 3 tbsp granulated sugar, 1/4 tsp baking powder, and 1 tsp poppy seeds until combined.
  2. Step 2: Add 3 tbsp milk, 2 tbsp vegetable oil, 1 tsp lemon zest, 1 tbsp lemon juice, and 1/4 tsp vanilla extract to the dry ingredients. Whisk until smooth and free of lumps.
  3. Step 3: Microwave the mug cake on high power for 90 seconds to 2 minutes, watching closely after 90 seconds; the cake should rise and be set but moist.
  4. Step 4: Let the mug cake cool for 2 minutes before eating directly from the mug or inverting onto a plate.

Frequently asked questions

How long does One-Bowl Lemon Poppy Seed Mug Cake take to make?

Total time is about 7 minutes (5 min prep + 2 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.

How do I store leftover One-Bowl Lemon Poppy Seed Mug Cake?

Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.

Can I substitute ingredients in One-Bowl Lemon Poppy Seed Mug 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 Lemon Poppy Seed Mug Cake for a different number of people?

The recipe is written for 1 servings. Multiply each ingredient by (your serving target / 1). 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 Lemon Poppy Seed Mug Cake?

American desserts 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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