Apple Crisp in a Mug is a fun and quick dessert that packs all the warm, sweet flavors of apple pie in a single serving! With soft apples, oats, and a crispy topping, it’s a cozy treat for any time.
This recipe is perfect when you’re craving something sweet but don’t want to make a whole pie. Just pop it in the microwave and enjoy—it’s like a hug in a mug! 🍏❤️
Key Ingredients & Substitutions
Apples: A medium apple works best, like Granny Smith or Honeycrisp. If you want, you can swap in another variety, but I find that tart apples give a nice contrast to the sweetness.
Granulated Sugar: This adds sweetness to your apples. If you’re cutting down on sugar, try using a sugar substitute or even honey for a more natural option!
Cinnamon: Ground cinnamon adds warmth and flavor. Feel free to add more if you love that spicy kick! You can also experiment with other spices like allspice or ginger if you want a different twist.
Oats: Rolled oats are key for the topping’s texture. If you don’t have oats, crushed nuts or granola can be delicious alternatives that still provide crunch.
Butter: Unsalted butter gives richness. You can use coconut oil or a vegan butter substitute for dairy-free options, which work great too!
How Do You Achieve the Perfect Crisp Topping?
Getting that perfect crisp topping can be a game changer for your mug apple crisp. Here’s how you can ensure your topping comes out just right:
- Use cold butter – it creates a flaky texture. Cut it into small cubes and mix quickly with the dry ingredients until it resembles coarse crumbs.
 - Don’t over-mix – a little unevenness in the topping gives a rustic finish and more texture.
 - Microwave time matters – watch carefully! Cooking for too long can make the topping soggy, so check it at 1 minute and adjust as needed.
 
With these tips, you’ll be able to whip up a delicious apple crisp in a mug quickly and easily!

How to Make Apple Crisp in a Mug
Ingredients You’ll Need:
- 1 medium apple (about 1 cup), peeled, cored, and diced
 - 1 tablespoon granulated sugar
 - 1/2 teaspoon ground cinnamon, divided
 - 1/4 teaspoon nutmeg (optional)
 - 1 tablespoon water or apple juice
 - 2 tablespoons rolled oats
 - 1 tablespoon all-purpose flour
 - 1 tablespoon brown sugar
 - 1 tablespoon unsalted butter, cold and diced
 - Whipped cream or vanilla ice cream, for topping
 
How Much Time Will You Need?
This delightful mug dessert takes about 5 to 7 minutes total! You’ll spend about 3 to 5 minutes preparing the ingredients and warming it up in the microwave, making it a super quick treat for any occasion.
Step-by-Step Instructions:
1. Prepare the Apples:
Start by placing the diced apple in a microwave-safe mug. Add the granulated sugar, half of the ground cinnamon, nutmeg if you like that extra kick, and water or apple juice. Stir everything together so the apples are coated.
2. Microwave the Apple Mixture:
Put the mug in the microwave and heat the apple mixture for about 1 to 2 minutes. You want the apples to be slightly softened but still firm. Once done, take it out and set it aside for a moment.
3. Mix the Crisp Topping:
In a small bowl, combine the rolled oats, flour, brown sugar, and the remaining ground cinnamon. This is the topping that will give you that delicious crispness!
4. Add the Butter:
Now, add the cold, diced butter to your oat mixture. Use your fingers or a fork to mix it in, until it looks crumbly and well combined. This will help form a nice crispy topping when cooked.
5. Assemble the Crisp:
Sprinkle your oat topping evenly over the cooked apples in the mug. Make sure the topping covers the apples well for the perfect bite!
6. Final Microwave Step:
Return the mug to the microwave and heat it on high for another 1 to 1.5 minutes. You want to see the topping bubbly and a bit crispy, so keep an eye on it to avoid overcooking.
7. Cool and Serve:
Let your apple crisp cool for a minute or two—you don’t want to burn your tongue! Top it off with whipped cream or a scoop of delicious vanilla ice cream for that extra treat!
8. Enjoy!
Dig in and enjoy your warm, cozy apple crisp right out of the mug! It’s perfect for when you want just a little sweet something.
This quick mug dessert delivers the classic apple crisp experience in just minutes, making it an ideal option for late-night cravings or a fun treat for any day!

Can I Use Different Types of Apples for This Recipe?
Absolutely! While Granny Smith and Honeycrisp are great choices for their balance of tartness and sweetness, you can use any apple you prefer. Just keep in mind that sweeter apples may require less sugar, while tart apples may need a bit more.
What If I Don’t Have Rolled Oats?
If you don’t have rolled oats, you can substitute them with crushed nuts or granola for a crunchy topping. Alternatively, you could use quick oats, but they may yield a slightly different texture.
How Do I Store Leftovers?
If you have any leftovers, store them in an airtight container in the fridge. They can keep for up to 2 days. When you’re ready to enjoy them again, simply reheat in the microwave for about 30 seconds to 1 minute, or until warmed through.
Can I Make This Apple Crisp in a Conventional Oven?
Yes, if you prefer traditional baking! Preheat your oven to 350°F (175°C) and follow the same steps to prepare the apple and topping. Bake in a small oven-safe dish for about 20-25 minutes, or until the apples are tender and the topping is golden brown. Enjoy your baked version!


