Easy Fudgy Chocolate Brownies with Cake Mix
Desserts

Easy Fudgy Chocolate Brownies with Cake Mix

ML
By Marie Lefebvre · Updated October 3, 2026

These incredibly fudgy brownies come together in minutes using a ready-made cake mix. With a crackly top and a dense, chocolatey center, they are the ultimate crowd-pleasing treat. A foolproof recipe that delivers rich, bakery-quality results every single time.

Prep⏱️ 60 min
Servings👥 1 servings
Difficulty📊 Very Easy
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🛒 Ingredients

1 servings

1
  • 1 box chocolate cake mix
  • 1½ coffee cups all-purpose flour
  • 1 coffee cup milk
  • 1 coffee cup olive oil
  • 1 teaspoon baking powder
  • 1 egg
  • 1 bar dark chocolate, roughly chopped (optional)
  • Vanilla extract, to taste (optional)

Directions

  1. 1

    Preheat your oven to 250 °C (480 °F). Grease and flour a square or rectangular baking pan.

  2. 2

    In a large bowl, whisk together all dry ingredients: the chocolate cake mix, flour, and baking powder.

  3. 3

    Gradually pour in the milk and olive oil, stirring continuously until fully combined.

  4. 4

    In a separate bowl, beat the egg and stir in vanilla extract if using, then fold into the batter.

  5. 5

    Mix until the batter reaches a thick, smooth consistency — it should hold its shape, not run.

  6. 6

    Pour the batter into the prepared pan and scatter the chopped chocolate on top if desired.

  7. 7

    Bake for approximately 30 minutes. A toothpick inserted in the center should come out with a few moist crumbs for perfectly fudgy brownies.

  8. 8

    Let cool for at least 15 minutes before slicing into squares.

💡 Chef's Tip

For extra fudgy results, pull the brownies from the oven when the center still looks slightly underdone — they continue to set as they cool. Swap olive oil for melted butter for a richer, more indulgent flavor.