Bright, fragrant, and incredibly simple, this Olive Oil Lemon Mug Cake is a sunny little treat that comes together in just minutes. Made with extra virgin olive oil for a rich, moist crumb and fresh lemon zest for a pop of citrus flavor, this single-serving cake is the perfect balance of sweet and tangy. No eggs, no fuss—just a few pantry staples and a microwave are all you need to whip up this light and luscious dessert.

Another popular mug cake to try is this classic vanilla mug cake and my popular nutella mug cake.

A white mug filled with a baked mug cake sits on a white cloth next to a silver spoon on a marble surface. A white mug filled with a baked mug cake sits on a white cloth next to a silver spoon on a marble surface.

Ingredients You’ll Need

Seven labeled ingredients—sugar, flour, milk, baking soda, salt, olive oil, and a lemon—are arranged on a white background in small glass bowls. Seven labeled ingredients—sugar, flour, milk, baking soda, salt, olive oil, and a lemon—are arranged on a white background in small glass bowls.
  • Olive Oil: Use a lighter flavor olive oil, nothing too over powering.
  • Lemon: Fresh zest is best, but you could also substitute lemon paste. I tend to skip bottled lemon juice.

How to Make Olive Oil Lemon Mug Cake

  • 6 tablespoons all-purpose flour
  • 3 tablespoons granulated sugar
  • ½ teaspoon baking powder
  • 1 pinch salt
  • ¼ cup olive oil
  • ¼ cup milk
  • 1 tablespoon lemon zest

Step by Step Instructions

  • In a 2-cup measuring cup or bowl, mix the dry ingredients
  • Add the olive oil, milk, and zest.
  • Stir with a fork or tiny whisk until no lumps remain.
  • Pour into a 12 ounce mug. Microwave on full power for 90 seconds – 2 minutes (depending on microwave). If the edges are still looking a little moist, add up to 30 seconds more.
  • Cool for about 5 minutes before eating.

Step by Step Photos

Four-step process showing flour in a measuring cup, adding wet ingredients, mixing with a fork, and the resulting smooth batter in a mug. Four-step process showing flour in a measuring cup, adding wet ingredients, mixing with a fork, and the resulting smooth batter in a mug.

Helpful Tips for the Perfect Mug Cake

  • Use a mild olive oil: A light or fruity extra virgin olive oil works best. Robust oils can overpower the lemon flavor.
  • Don’t skip the zest: The lemon zest gives this cake its bold citrus flavor. One small lemon should provide just enough.
  • Choose the right mug: Use a microwave-safe mug at least 10–12 oz in size to prevent overflow.
  • Mix gently: Over mixing can make the cake tough. Stir just until everything is combined and smooth.
  • Watch your microwave: Start checking at the 1-minute mark. Depending on your microwave’s wattage, cooking time may vary slightly.

For more mug cake tips read Common Mistakes When Making Mug Cakes and Mug Pies (and How to Fix Them

Flavor Variations

  • Add a splash of vanilla or a pinch of dried thyme for a unique twist.
  • Drizzle with powdered sugar glaze or top with a dollop of whipped cream or yogurt for an extra treat.

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lemon cake in a mug with bite on spoon sitting on napkin.

Olive Oil Lemon Mug Cake

This light and zesty Olive Oil Lemon Mug Cake is the perfect single-serving dessert. Made with pantry staples and brightened up with fresh lemon zest, it's moist, tender, and comes together in minutes using your microwave.
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Prep Time: 2 minutes
Cook Time: 2 minutes
Cooling Time: 5 minutes
Total Time: 9 minutes
Servings: 1 cake
Author:Sydney Dawes

Ingredients

  • 6 tablespoons all-purpose flour
  • 3 tablespoons granulated sugar
  • ½ teaspoon baking powder
  • 1 pinch salt
  • ¼ cup olive oil
  • ¼ cup milk
  • 1 tablespoon lemon zest

Instructions

  • In a 2-cup measuring cup or bowl, combine the flour, sugar, baking powder, and salt.
  • Add the olive oil, milk, and zest.
  • Stir with a fork or tiny whisk until no lumps remain.
  • Pour into a 12 ounce mug. Microwave on full power for 90 seconds – 2 minutes (depending on microwave). If the edges are still looking a little moist, add up to 30 seconds more.
  • Allow to cool for 5 minutes before eating. Excellent plain or with berries and yogurt.

Nutrition Disclaimer

I am not a certified Dietitian or Nutritionist. The nutrition amounts given below is an estimate only and provided as a general guide only.

Nutrition

Serving: 1cake | Calories: 820kcal | Carbohydrates: 75g | Protein: 7g | Fat: 57g | Cholesterol: 7mg | Sodium: 277mg | Fiber: 2g | Sugar: 39g
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