Prep Time: 3 minutes | Cook Time: 1-2 minutes | Total Time: 5 minutes
Skill Level: Beginner | Intensity: Low effort, minimal steps
Ingredients
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4 tablespoons all-purpose flour
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3 tablespoons granulated sugar
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2 tablespoons unsweetened cocoa powder (for chocolate version; omit for vanilla)
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¼ teaspoon baking powder
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⅛ teaspoon salt (a pinch)
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3 tablespoons milk (any kind)
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2 tablespoons vegetable oil or melted butter
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¼ teaspoon pure vanilla extract
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1 tablespoon rainbow sprinkles or chocolate chips (optional)
For the 30-Second Icing (Optional):
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2 tablespoons powdered sugar
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1 teaspoon milk or cream
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¼ teaspoon vanilla extract
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A dash of food coloring (optional)
Equipment
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1 standard 12-ounce microwave-safe mug or ramekin
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1 small whisk or fork
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1 small bowl for icing (optional)
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Measuring spoons
Step-by-Step Instructions
Step 1: Combine Dry Ingredients (1 minute)
In your microwave-safe mug, add the flour, sugar, cocoa powder (if making chocolate), baking powder, and salt. Use your fork or whisk to stir these together until they are completely combined and free of lumps. This ensures an even texture in your final cupcake.
Step 2: Add Wet Ingredients (1 minute)
Pour in the milk, vegetable oil (or melted butter), and vanilla extract directly into the mug with the dry ingredients. Mix vigorously with your fork until you have a smooth, uniform batter. Make sure to scrape the bottom and sides of the mug to incorporate all the flour. At this stage, fold in your sprinkles or chocolate chips if using.
Step 3: Microwave (1-2 minutes)
Place the mug in the center of your microwave. Cook on high power for 1 minute and 15 seconds to 1 minute and 30 seconds. Cooking time can vary based on microwave wattage (this recipe is optimized for a 1000W oven). The cake is done when the top looks set, is slightly moist, and springs back when gently touched. Do not overcook, or it will become rubbery. It will continue to cook slightly as it cools.
Pro Tip: For a perfectly moist center, err on the side of slightly underdone. The cake should not pull away from the mug’s sides until it starts to cool.
Step 4: Prepare Quick Icing (30 seconds – Optional)
While the cake cools for a minute, quickly make the icing. In a small bowl, mix the powdered sugar, 1 teaspoon of milk, and vanilla extract until smooth. Add more milk a few drops at a time if it’s too thick, or more sugar if too runny. Stir in food coloring if desired.
Step 5: Final Assembly & Serve (1 minute)
If you’ve made the icing, drizzle it over the slightly warm cupcake right in the mug. You can also simply dust it with a little powdered sugar or cocoa powder. Enjoy directly from the mug with a spoon while warm!
Chef’s Notes & Variations
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Vanilla Cupcake: Omit the cocoa powder. Increase flour by 1 tablespoon.
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Add-Ins: Before microwaving, try folding in a handful of blueberries, crushed Oreo pieces, or a swirl of peanut butter.
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Egg-Free: This recipe is naturally egg-free.
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Dairy-Free: Use almond, oat, or soy milk and a dairy-free butter alternative.
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Avoid Overflow: Do not fill your mug more than halfway with batter to allow for rising.
Nutrition Information (Per Serving, without icing)
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Calories: ~350 kcal
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Total Fat: 18g
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Saturated Fat: 2g
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Cholesterol: 0mg
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Sodium: 220mg
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Total Carbohydrates: 45g
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Dietary Fiber: 2g
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Sugars: 25g
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Protein: 4g