Prep your mug: Use a large microwave-safe mug and lightly grease it to prevent sticking.
Whisk wet ingredients: Add egg, applesauce, milk, maple syrup, vanilla, and melted butter/oil.
Whisk with a fork until smooth.
Add dry ingredients: Stir in almond flour, oat flour, protein powder, cinnamon, baking powder, and salt. Mix until just combined.
Fold in apple: Gently stir in the diced apple so itβs evenly distributed.
Microwave: Cook on high for 60β90 seconds. Start checking at 60 seconds.
The top should look set but still moist. Avoid overcooking.
Rest: Let it stand for 30β60 seconds to finish steaming and become fluffy.
Top and enjoy: Add a sprinkle of cinnamon, a spoon of Greek yogurt, or a drizzle of maple. Serve warm.