Soft, buttery, and topped with a golden cinnamon-sugar crumble, this Cinnamon Crumble Mug Cake tastes just like a cozy coffee cake — but ready in just 2 minutes! It’s the perfect warm, comforting dessert for when you want bakery vibes without turning on the oven.
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In a 14-oz microwave-safe mug, whisk together flour, baking powder, sugar, salt, and cinnamon (if using).
Stir in milk, oil (or melted butter), and vanilla. Mix until smooth and lump-free, scraping the sides and bottom of the mug.
In a small bowl, combine brown sugar, flour, butter, and cinnamon. Mix with a fork until the texture is crumbly and sandy.
Sprinkle the crumble evenly over the cake batter — do not mix it in.
Cook on HIGH (950 W) for 80–100 seconds, or until the cake rises and the top looks set but still soft. Check at 80 seconds as microwaves vary.
Let it cool for 1 minute to allow the crumble to crisp slightly.
Drizzle with icing, honey, or top with whipped cream or vanilla yogurt.
Serve warm with a scoop of vanilla ice cream, a drizzle of maple syrup or caramel, or alongside a cup of coffee or chai.
Try a simple icing made with powdered sugar and milk for a quick topping.
Use whole wheat flour or oat flour for a wholesome version.
Replace sugar with honey or coconut sugar for a healthier alternative.
For dairy-free, use plant milk and vegan butter or oil.
Can I make this mug cake vegan?
Yes, use plant-based milk and vegan butter or oil as substitutes.
What can I use instead of all-purpose flour?
You can use whole wheat flour or oat flour for a wholesome version.
How do I prevent the cake from becoming rubbery?
Ensure you do not overcook the cake. Reduce microwave time by 10–15 seconds if it becomes rubbery.
Can I store the mug cake?
It is best enjoyed fresh, but you can cover and refrigerate it for up to 1 day. Reheat for 10–15 seconds before serving.
What toppings go well with this mug cake?
You can add vanilla ice cream, whipped cream, honey, maple syrup, caramel, or a simple icing for extra flavor.
I’m Rajani, a passionate cook with over 15 years of experience creating delicious, approachable dishes. My love for food began in childhood, inspired by watching Sanjeev Kapoor’s Khana Khazana with my mom and helping her in the kitchen. On The Gourmet’s Hut, I share tried-and-tested authentic Indian recipes and quick microwave mug cake recipes perfect for busy days. My goal is to make cooking simple, flavorful, and fun—because food brings people together and every meal should create memories.
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