Step 1: Prepare the Mug

Choose a microwave-safe mug (10–12 oz / 300–350 ml).
Lightly grease the inside with a little oil or butter to prevent sticking.

Step 2: Mix Dry Ingredients

Add to the mug:

• All-purpose flour

• Granulated sugar

• Baking powder

• A pinch of salt

Stir well with a fork until fully combined and no lumps remain.

Step 3: Add Wet Ingredients

Add:

• Milk

• Vegetable oil (or melted butter)

• Vanilla extract

Stir until the batter is smooth.
Make sure to scrape the bottom and sides of the mug so all flour is mixed in.

Step 4: Add Blueberries

Gently fold the blueberries into the batter.

If using frozen blueberries, add them directly from the freezer (do not thaw).

Step 5: Microwave

Place the mug in the microwave.

Cook on HIGH power for 60–90 seconds.
Start checking at 60 seconds.

The cake is done when:

• The top looks set

• It springs back lightly when touched

Do not overcook, or the cake will turn dry.

Step 6: Rest and Serve

Let the mug cake rest for 1–2 minutes (it will continue setting).

Serve warm, straight from the mug, or add:

• Whipped cream

• Vanilla ice cream

• Powdered sugar

• Extra blueberries

Step 7: Enjoy

Grab a spoon and enjoy a soft, fluffy blueberry vanilla cake in minutes.