Warm, comforting, and ready in just 7 minutes, this Apple Pie Microwave Oatmeal in a Mug is your ultimate morning lifesaver. Creamy oats are infused with sweet cinnamon-spiced apples, creating a cozy flavor reminiscent of homemade pie. The soft, tender texture pairs perfectly with a hint of crunch from optional toppings like nuts or granola. It’s a wholesome treat that feels indulgent yet keeps your day on track.
With only 5 minutes of prep and 2 minutes of cooking, this recipe is as quick as it is delicious. The aroma of warm apples and cinnamon will fill your kitchen, making it impossible not to smile. Whether you’re rushing out the door or savoring a slow morning, this mug of oatmeal delivers comfort and flavor in every spoonful.
What You’ll Need

- 1/2 apple, cored and chopped (skins on for extra fiber)
- 1 cup water
- 1/2 cup rolled oats (or quick cooking oats for faster results)
- 1/2 tsp ground cinnamon
- 3 teaspoons brown sugar (optional, adjust to taste)
How to Make It
- In a microwave-safe mug, combine the chopped apple, water, rolled oats, and cinnamon. Stir well to mix.
- Microwave on high for around 2 minutes (based on a 1200W microwave). Watch closely to prevent overflow, and adjust time as needed for your microwave.
- Once the oats are fully cooked and the mixture is thick, remove from the microwave. Stir in brown sugar if desired.
- Enjoy immediately while warm and comforting!
Topping Ideas to Elevate Your Oatmeal
Add a dollop of Greek yogurt for creaminess or a drizzle of maple syrup for extra sweetness. For crunch, sprinkle on some chopped nuts or granola. Fresh berries or a handful of raisins can also add a burst of flavor!
Quick Tips for Perfect Microwave Oatmeal
Use a large microwave-safe mug to prevent overflow. If your microwave is less powerful than 1200W, add an extra 30 seconds and check for doneness. Stir halfway through cooking to ensure even texture. For a creamier result, swap water with milk or a plant-based alternative.
Customize Your Oatmeal with Recipe Variations
Swap the apple for banana slices or pear chunks for a different fruity twist. Add a pinch of nutmeg or cardamom alongside cinnamon for a spiced upgrade. For a protein boost, mix in a tablespoon of peanut butter or protein powder after cooking.
Storage and Reheating Made Easy
If you have leftovers, store them in an airtight container in the fridge for up to 2 days. Reheat in the microwave for 1-2 minutes, stirring halfway through. Add a splash of milk or water to restore the creamy texture.
Common Questions Answered
Can I use steel-cut oats? No, they take much longer to cook. Stick to rolled or quick oats for this recipe. Is the brown sugar necessary? It’s optional! Adjust sweetness to your taste or skip it entirely for a healthier option. Can I make this ahead? Yes, but it’s best enjoyed fresh for the best texture.

Apple Pie Microwave Oatmeal in a Mug
Ingredients
- 1/2 apple cored and chopped (skins on)
- 1 cup water
- 1/2 cup rolled oats (or quick cooking oats)
- 1/2 tsp ground cinnamon
- 3 teaspoons brown sugar optional
Instructions
- Microwave for around 2 minutes or until the oats are fully cooked (timing is based on my 1200W microwave so your timing might vary)
- Enjoy immediately!