Oat Brownie for One – Fudgy Microwave Mug Cake in Minutes

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Rajani (@thegourmetschoice)

A rich, gooey, and chocolatey single-serve brownie made with oats, cocoa, and chocolate chips. Ready in just minutes, it’s the perfect quick dessert for chocolate cravings without baking a whole batch. Whether you're looking for a cozy treat during cold evenings or a quick indulgence, this recipe is a must-try!

Oat Brownie for One – Fudgy Microwave Mug Cake in Minutes recipe
Prep Time
5min
Cook Time
2min
Total Time
7min

Ingredients

1 Servings
(1 serving = 1 mug brownie)

Dry Ingredients

  • rolled oats
    rolled oats
    3tbsp
  • cocoa powder
    cocoa powder
    2tbsp
  • sugar
    sugar
    2tbsp
  • baking powder
    baking powder
    1/4tsp
  • salt
    salt
    1pinch

Wet Ingredients

  • milk
    milk
    3tbsp
  • melted butter
    melted butter
    1tbsp
  • vanilla extract
    vanilla extract
    1/4tsp

Optional

  • chocolate chips
    chocolate chips
    1tbsp

How to make Oat Brownie for One – Fudgy Microwave Mug Cake in Minutes

  1. Step 1

    In a microwave-safe mug, mix oats, cocoa powder, sugar, baking powder, and salt.

    Step 1.1: In a microwave-safe mug, mix oats, cocoa powder, sugar, baking powder, and salt
  2. Step 2

    Add milk, melted butter, and vanilla extract. Stir until smooth and flowing.

    Step 1.1: Add milk, melted butter, and vanilla extract
  3. Step 3

    Fold in chocolate chips and mix well.

  4. Step 4

    Microwave on high for 1 minute 30 seconds to 2 minutes. Start checking at 90 seconds; the brownie should be set on top but fudgy in the center.

    Step 1.1: [Microwave](https://amzn
  5. Step 5

    Let cool for 1–2 minutes before serving.

    Step 1.1: Let cool for 1–2 minutes before serving
    Step 1.2: Let cool for 1–2 minutes before serving

Nutrition (per serving)

Calories

287.5kcal (14.37%)

Protein

5.9g (11.8%)

Carbs

38.1g (13.85%)

Sugars

18.2g (36.4%)

Healthy Fat

3.8g

Unhealthy Fat

8.2g

% Daily Value based on a 2000 calorie diet

Tips & Tricks

  1. Add peanut butter, caramel, or nut butter on top for extra flavor.

  2. Use oat flour for a smoother, softer texture.

  3. Swap sugar for honey, maple syrup, or your preferred sweetener.

  4. Microwave times may vary depending on wattage; adjust as needed.

FAQS

  1. Can I use oat flour instead of rolled oats?

    Yes! Oat flour will give a smoother, softer texture, and you may need slightly less milk.

  2. Can I make it sugar-free?

    Yes, substitute sugar with a sugar-free sweetener or a mashed banana for natural sweetness.

  3. Can I make this vegan?

    Absolutely. Use plant-based milk (like almond or oat milk) and coconut oil or vegan butter instead of regular butter.

  4. Can I make it without butter or oil?

    Yes, though the brownie will be less rich and fudgy. You may need slightly more milk to keep it moist.

  5. Can I bake this in the oven instead of the microwave?

    Yes, bake in a small oven-safe ramekin at 350°F (175°C) for 10–12 minutes until set.

  6. Can I store leftovers?

    It’s best enjoyed fresh, but you can refrigerate for 1–2 days and reheat before serving.

  7. How do I know when it’s done?

    The top should be set, but the center can remain slightly fudgy. Check at 90 seconds in the microwave.

  8. Can I make a larger portion for two people?

    Yes, double all ingredients and microwave 2–3 minutes, checking halfway.

  9. Can I make it sugar-free?

    Yes, substitute sugar with a sugar-free sweetener or a mashed banana for natural sweetness.

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thegourmetschoice's profile picture

Rajani

(@thegourmetschoice)

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...

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