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Ultimate Fudgy Brownies from Box Mix

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A quick and easy recipe that transforms a standard box brownie mix into rich, dense, and fudgy brownies with simple doctor-up tricks for perfect results.

Ingredients

Scale
  • 1 box brownie mix (preferably Ghirardelli or Betty Crocker)
  • 1/2 cup (115g) unsalted butter, melted
  • 2 large eggs, room temperature
  • 1 tsp espresso powder (optional but recommended)
  • 1/3 cup (80g) sour cream or Greek yogurt
  • 1 tsp vanilla extract
  • 1/2 cup (90g) chocolate chips or chunks (optional)
  • Pinch of salt

Instructions

  1. Preheat your oven to 325°F (163°C). Line an 8×8-inch baking pan with parchment paper, leaving some overhang for easy removal.
  2. Melt the butter in a microwave-safe bowl in 30-second bursts until fully melted but not browned (about 1 minute). Let it cool slightly.
  3. In a mixing bowl, whisk together the melted butter, eggs, and vanilla extract until just combined.
  4. Add the brownie mix, espresso powder, sour cream (or yogurt), and a pinch of salt. Stir gently with a spatula until just combined; the batter will be thick and glossy.
  5. Fold in the chocolate chips or chunks if using.
  6. Pour the batter into the prepared pan and smooth the top evenly. Tap the pan gently on the counter to release air bubbles.
  7. Bake for 28–32 minutes. Start checking at 28 minutes by inserting a toothpick near the center; it should come out with a few moist crumbs but no wet batter.
  8. Cool completely in the pan on a wire rack. Use the parchment overhang to lift brownies out for easy slicing.

Notes

Use melted unsalted butter instead of oil for richer flavor and fudginess. Do not overmix the batter to avoid tough brownies. Use an oven thermometer to prevent overbaking. Cooling completely before slicing is crucial for fudgy texture. For a gooier center, reduce baking time by 2 minutes. Espresso powder enhances chocolate flavor without coffee taste. Variations include adding nuts, cinnamon, cayenne, fresh raspberries, or peanut butter swirl.

Nutrition

Keywords: fudgy brownies, box mix brownies, easy brownies, quick dessert, chocolate brownies, doctor-up brownies, homemade brownies

Find it online: https://cooksyla.com/ultimate-fudgy-brownies-from-box-mix-easy-doctor-up-tricks-for-perfect-results/