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An Oreo mug cake is a 2-ingredient microwave dessert: crush about 5 cookies, stir in a splash of milk to make a thick batter, and microwave for 90 seconds. No egg, no flour, no cake mix. The crushed cookies bring all the sugar and structure, so it sets into a warm, fudgy, single-serving cake.
Some of my best desserts are born out of pure laziness, and this one is the poster child. It was one of those nights where I wanted something warm and chocolatey but absolutely refused to turn on the oven or measure anything.
The wild part is how luxurious it tastes for being made out of basic packaged cookies. You would never guess there is no flour, no butter, and no eggs in here. It hits the same craving as my Dubai chocolate brownies when I want a real chocolate hit, just on a five-minute timeline instead.
What makes this Oreo mug cake so good
It is all about the cookies doing double duty. The cocoa wafers melt into a deep, brownie-like crumb while the sweet creme filling keeps everything moist and rich. You get a soft, almost molten center and slightly set edges, all from a mug and a microwave.
The other thing I love is how customizable it is. Plain, it tastes like warm cookies and cream. Topped, it turns into a tiny dessert that looks way fancier than the effort suggests. It lands in the same fun, no-fuss lane as my matcha cake balls.
What dessert can I make with just two ingredients?
This Oreo mug cake is the move when you only have two ingredients and zero patience. All you need is a sleeve of sandwich cookies and a little milk, both of which are probably already in your kitchen. Crushed cookies replace the flour and sugar, and the milk binds everything into a batter, so there is nothing else to buy. It’s the same minimal-effort energy as my chocolate covered mandarin oranges, where two things turn into a real treat.
How do you make a quick and easy mug cake?
Crush 5 cookies into fine crumbs, stir in 1/4 cup of milk until you have a thick, spoonable batter, and microwave for 90 seconds. The batter should look like wet sand with no dry pockets, so add a teaspoon more milk if it feels stiff. Microwaves vary, so start at 90 seconds and add 10-second bursts if the center still looks raw. The cake keeps cooking a little as it cools, so pull it while the middle is just set.
Can you use other cookies instead of Oreos?
Yes, almost any soft packaged cookie works, so use what you have. Chips Ahoy gives you a chocolate-chip-cookie vibe, and golden or vanilla sandwich cookies make a lighter, birthday-cake-leaning version. If you want something closer to a 2-ingredient brownie mug cake, lean into the darkest chocolate cookies you can find, since the more cocoa in the cookie, the fudgier the result. The milk-to-cookie ratio stays the same no matter which cookie you grab.
Tips for the best mug cake
Crush the cookies really fine
Big chunks stay dry and crumbly in the middle. Crush the cookies into a fine, even sand so the milk can soak into every bit and the cake bakes through evenly.
Add the milk a little at a time
You want a thick batter, not a soup. Start with 1/4 cup, stir, and only add more by the teaspoon. Too much milk leaves the center wet and gummy after microwaving.
Use a roomy mug
The cake puffs up as it cooks, so pick a mug that is only half full of batter. A too-small mug means a microwave mess to clean up.
Do not overcook it
Ninety seconds is usually the sweet spot. Going much longer dries the cake out and makes it tough, so stop while the top is just set and the center still looks soft.
Storage and leftovers
This is a make-it-and-eat-it situation, so it is best the second it comes out of the microwave while the center is still gooey. If you somehow have leftovers, cover the mug and keep it at room temperature for a few hours, then warm it for about 10 seconds to bring back the softness.
For another quick single-serving dessert that feels way fancier than the effort involved, my Shortcut Creme Brulee delivers that restaurant-style torched sugar finish without the hours of traditional prep.
It comes together so fast that I just make a fresh one rather than save it. If you like that warm, melty, single-serving payoff, my hot cocoa bombs give you a similar cozy moment in drink form.
Equipment
- microwave-safe mug
- measuring cups
Ingredients
This makes one generous mug cake. Double it in a second mug if you’re feeding two.
- 5 Oreos (or Chips Ahoy, or any soft packaged cookie)
- 1/4 cup whole milk
- Optional toppings: chocolate syrup, powdered sugar, or rainbow sprinkles
No whole milk? Any milk works here, including oat or almond milk, though whole milk makes the richest cake. For a treat-yourself version, swap a splash of the milk for heavy cream. If you love easy sweets like this, my Biscoff marshmallow treats belong on your list too.
Instructions
- Drop 5 cookies into a microwave-safe mug and crush them into fine crumbs with the back of a spoon, or crush them in a bag first and pour them in.
- Add 1/4 cup whole milk and stir until you have a thick, even batter with no dry pockets. Add a teaspoon more milk if it looks stiff.
- Microwave for 90 seconds, until the top is just set and the center still looks soft. Add 10-second bursts only if it is clearly raw.
- Let it cool for a minute, then top with chocolate syrup, powdered sugar, or sprinkles and dig in straight from the mug.
If you want another crushed-cookie trick, my ube rice krispie treats fold whole Oreos right into the mix. And if you want to understand why this 2-ingredient hack actually works, The Kitchn did a fun taste test of the viral Oreo mug cake.
If you make this Oreo mug cake, leave a star rating on the recipe card below and drop a comment to tell me which cookie you used. I want to know if anyone out there is brave enough to try it with the weird limited-edition flavors.
Print
Oreo Mug Cake (2 Ingredients)
- Total Time: 4
- Yield: 1 mug cake 1x
Description
A 2-ingredient Oreo mug cake made from crushed cookies and milk, microwaved into a warm, fudgy single-serving dessert in about 90 seconds. No egg, no flour, no cake mix.
Ingredients
- 5 Oreos (or Chips Ahoy, or any soft packaged cookie)
- 1/4 cup whole milk
- Optional toppings: chocolate syrup, powdered sugar, or rainbow sprinkles
Equipment
Get Recipe Ingredients
Instructions
- Crush the cookies. Drop 5 cookies into a microwave-safe mug and crush them into fine crumbs with the back of a spoon, or crush them in a bag first and pour them in.
- Make the batter. Add 1/4 cup whole milk and stir until you have a thick, even batter with no dry pockets. Add a teaspoon more milk if it looks stiff.
- Microwave. Microwave for 90 seconds, until the top is just set and the center still looks soft. Add 10-second bursts only if it is clearly raw.
- Top and serve. Cool for a minute, then finish with chocolate syrup, powdered sugar, or sprinkles and eat straight from the mug.
Notes
- Crush the cookies into a fine sand so the milk soaks in evenly and the center is not crumbly.
- Add milk by the teaspoon after the first 1/4 cup; too much makes the center gummy.
- Use a mug only half full of batter so it has room to puff up without overflowing.
- Microwaves vary; 90 seconds is the starting point, and overcooking dries it out.
- Any soft packaged cookie works, so match the flavor to whatever you have on hand.
- Prep Time: 2
- Cook Time: 2
- Category: Dessert
- Method: Microwave
- Cuisine: American
Nutrition
- Serving Size: 1 mug cake
- Calories: 300 kcal
- Sugar: 24g
- Sodium: 260mg
- Fat: 12g
- Saturated Fat: 4g
- Unsaturated Fat: 7g
- Trans Fat: 0g
- Carbohydrates: 45g
- Fiber: 1g
- Protein: 5g
- Cholesterol: 5mg