Start by washing a sweet or tart apple under cool water. Once clean, core and finely dice it into ¼ inch pieces to ensure even cooking. Set the diced apple aside while you gather the other ingredients for the Melt-in-Your-Mouth Minute Apple Mug Cake.

In a medium mixing bowl, whisk together ¼ cup of all-purpose flour, 2 tablespoons of granulated sugar, ¼ teaspoon of baking powder, ½ teaspoon of ground cinnamon, a pinch of ground nutmeg, and a pinch of salt. Ensure the ingredients are well mixed and free of lumps.

To the dry mixture, pour in 3 tablespoons of milk, 2 tablespoons of vegetable oil, and ½ teaspoon of vanilla extract. Stir gently until all the wet ingredients are incorporated into the dry mix, forming a smooth batter.

Carefully add the diced apple to the batter, folding them in gently. Make sure the apple pieces are evenly distributed.

Spoon the prepared batter into a microwave-safe mug that holds 12-14 ounces, making sure to fill it about two-thirds full.

Place the mug in the microwave and cook on high for 60-90 seconds, depending on your microwave's wattage. Check for doneness by looking for a set, springy top.

Carefully remove the mug from the microwave and let it sit for 1-2 minutes, allowing it to firm up slightly.

You can enjoy your cake directly from the mug or invert it onto a plate for a fancier presentation.

Consider adding a scoop of creamy vanilla ice cream, a dollop of whipped cream, or a sprinkle of nuts.