Microwave Blueberry Mug Cake

Microwave Blueberry Mug Cake is the perfect solution when a sweet craving hits and time is short. Because it comes together in just minutes, it’s ideal for busy evenings, cozy nights, or quick dessert breaks. First, simple pantry staples are mixed right in a mug. Then, juicy blueberries melt into the batter as it cooks, creating soft bursts of flavor in every bite.

Although mug cakes feel modern, they’re inspired by traditional single-serve desserts made for convenience and comfort. Over time, the microwave transformed this idea into today’s fast and satisfying treat. As a result, this blueberry version delivers warmth, nostalgia, and ease all at once.

Moreover, this recipe produces a tender, lightly sweet cake that stays moist without becoming dense. Whether enjoyed plain or dusted with powdered sugar, it feels homemade and comforting. So when you want something simple, cozy, and reliable, this microwave blueberry mug cake delivers every time.

Recipe Yield: 1 serving

INGREDIENTS

3 Tbsp blueberries (fresh or frozen)
4 Tbsp all-purpose flour
2 Tbsp granulated sugar
3 Tbsp milk
1 Tbsp unsalted butter, melted
1/4 tsp vanilla extract
1/4 tsp baking powder
Pinch of salt
Optional: powdered sugar, for topping

INSTRUCTIONS

1. Mix the dry ingredients:
First, add the flour, sugar, baking powder, and salt to a microwave-safe mug. Then, stir well until the mixture is evenly combined and free of lumps.

2. Add the wet ingredients:
Next, pour in the milk, melted butter, and vanilla extract. Stir gently until a smooth, thick batter forms with no dry spots remaining.

3. Fold in the blueberries:
Carefully fold in the blueberries, distributing them throughout the batter without crushing them. This helps keep the cake light while creating juicy pockets of flavor.

4. Microwave the mug cake:
Place the mug in the microwave and cook on high for 60–75 seconds. Meanwhile, watch closely, as microwave strength varies. The cake should rise, set on top, and remain slightly moist in the center.

5. Rest and serve:
Finally, let the mug cake rest for about 30 seconds. Optionally, dust with powdered sugar and enjoy warm directly from the mug.

Helpful Tips to Perfect This Recipe

• Use the right mug size: A 10–12 oz microwave-safe mug allows the cake to rise properly without overflowing, ensuring even cooking.
• Avoid overcooking: Since microwaves vary, start at 60 seconds and add short bursts only if needed to keep the cake soft and tender.
• Frozen blueberries work beautifully: Add them straight from frozen without thawing to prevent excess moisture and keep the crumb fluffy.