Microwave Mug Cookie – Gooey 2-Minute Easy Dessert

Some nights you just want a warm cookie without turning on the oven. This microwave mug cookie gives you exactly that in about 2 minutes.

You stir a few basic ingredients in a mug, pop it in the microwave, and out comes a soft, gooey chocolate chip cookie you can eat with a spoon.

It is perfect for a late-night craving, a quick after-school treat, or when you want dessert for one without a whole batch tempting you.

About the Ingredients

2 tablespoons (28g) unsalted butter, melted

Melt it in the mug first so you skip dirtying a bowl. Salted butter works too, just cut the added salt to a tiny pinch.

1 tablespoon (13g) granulated sugar

This adds crisp edges and sweetness. If you only have cane sugar, that works fine here.

1 tablespoon (13g) packed light brown sugar

Brown sugar keeps the cookie soft and chewy. Dark brown sugar gives a deeper molasses flavor if you prefer.

1 large egg yolk

The yolk is what makes this mug cookie rich and tender. Save the white for an omelet or meringue.

1/4 teaspoon vanilla extract

A little goes a long way for that classic cookie aroma. Vanilla paste or maple syrup can stand in if you are out.

1/4 cup (31g) all-purpose flour

Spoon the flour into the cup and level it so the cookie is not dry. A gluten-free 1-to-1 blend swaps in easily.

2 tablespoons (28g) semisweet chocolate chips

Chocolate chips melt into gooey pockets. Chopped chocolate bar or white chocolate chips are great substitutes.

1/8 teaspoon baking soda

This tiny bit helps the cookie rise and stay tender. Do not skip it, or the texture turns dense.

1 tiny pinch of salt

Salt balances the sweetness and makes the chocolate pop. Skip it only if you used salted butter.

Tips & Tricks

• Do not overcook it. Microwave in 30-second bursts and stop when the top looks just set and slightly glossy, because a dry mug cookie turns rubbery fast.
• Use a wide mug. An 12-ounce or larger mug gives the cookie room to spread and cook evenly instead of steaming in a narrow cup.
• Let it rest 1 minute. The center keeps cooking as it sits, so resting gives you a gooey middle instead of a molten, underdone one.
• Watch your wattage. A 1000-watt microwave needs about 60 to 75 seconds, while a 700-watt one may need 90 seconds, so check early.

Step-by-Step Instructions

1. Melt the butter

Add the butter to a 12-ounce microwave-safe mug and heat for 20 to 30 seconds until fully melted, which should look liquid with no solid chunks.

2. Stir in sugars

Whisk in the granulated sugar, brown sugar, and vanilla until smooth and slightly glossy, about 15 seconds.

3. Add the yolk

Stir in the egg yolk until the mixture is uniform in color with no streaks of yolk left.

4. Fold in dry ingredients

Add the flour, baking soda, and salt, then stir gently until just combined and no dry flour remains.

5. Add the chocolate

Fold in the chocolate chips, then press a few extra on top if you like a gooey finish.

6. Microwave the cookie

Microwave on high, about 1000 watts (212F/100C internal steam temperature), for 60 to 75 seconds. Stop when the top is just set, slightly glossy, and the edges look dry; a toothpick inserted into the center should come out with moist crumbs, not wet batter.

7. Rest and enjoy

Let the mug rest for 1 to 2 minutes so the center finishes cooking, then eat warm with a spoon.

Delicious Variations

Peanut Butter Mug Cookie

Swirl in 1 tablespoon of creamy peanut butter before microwaving for a salty-sweet twist.

Double Chocolate Mug Cookie

Use 1 tablespoon cocoa powder in place of 1 tablespoon flour and add extra chocolate chips.

Oatmeal Raisin Mug Cookie

Swap 2 tablespoons of flour for quick oats and use raisins instead of chocolate chips.

How to Store Microwave Mug Cookie

Frequently Asked Questions

Grab your favorite mug and give this microwave mug cookie a try tonight. It takes just a couple of minutes, and you will have a warm, gooey treat all to yourself. Here's to small steps, big impact.

Microwave Mug Cookie

This microwave mug cookie is a warm, gooey single-serve dessert ready in 2 minutes with pantry staples and no oven needed.

★★★★½ 4.8 (212 ratings)

3 minPrep time2 minCook time1Servings420 kcalCalories

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🧂 Ingredients

• 2 tablespoons (28g) unsalted butter, melted
• 1 tablespoon (13g) granulated sugar
• 1 tablespoon (13g) packed light brown sugar
• 1 large egg yolk
• 1/4 teaspoon vanilla extract
• 1/4 cup (31g) all-purpose flour
• 2 tablespoons (28g) semisweet chocolate chips
• 1/8 teaspoon baking soda
• 1 tiny pinch of salt

📋 Instructions

1. 1Melt the butter — Add the butter to a 12-ounce microwave-safe mug and heat for 20 to 30 seconds until fully melted, which should look liquid with no solid chunks.
2. 2Stir in sugars — Whisk in the granulated sugar, brown sugar, and vanilla until smooth and slightly glossy, about 15 seconds.
3. 3Add the yolk — Stir in the egg yolk until the mixture is uniform in color with no streaks of yolk left.
4. 4Fold in dry ingredients — Add the flour, baking soda, and salt, then stir gently until just combined and no dry flour remains.
5. 5Add the chocolate — Fold in the chocolate chips, then press a few extra on top if you like a gooey finish.
6. 6Microwave the cookie — Microwave on high, about 1000 watts (212F/100C internal steam temperature), for 60 to 75 seconds. Stop when the top is just set, slightly glossy, and the edges look dry; a toothpick inserted into the center should come out with moist crumbs, not wet batter.
7. 7Rest and enjoy — Let the mug rest for 1 to 2 minutes so the center finishes cooking, then eat warm with a spoon.

👨‍🍳 Chef's Note: Every microwave is different, so treat the first batch as a test run and adjust by 10 seconds next time. A slightly underdone center is always better than an overcooked one.

Servings: 1

Cuisine: American

Course: Dessert

Nutrition (per serving): 420 kcal · 6g protein · 48g carbs · 23g fat

Written by Maya Chen

Maya writes about sustainable living and zero-waste swaps for busy families. She focuses on small, actionable changes that fit into real life without judgment or guilt.