Description
These Grandma-Approved Brownie Cookies are the perfect shortcut treat: all the rich, fudgy flavor of brownies baked into soft, chewy cookies—using a simple box mix. They’re quick to stir together, need just a handful of pantry ingredients, and deliver that nostalgic, homemade taste without any fuss. Ideal for bake sales, last-minute guests, or whenever a chocolate craving hits.
Ingredients
Scale
- 1 box brownie mix (about 18–20 oz / 510–566 g)
- 2 large eggs, at room temperature
- 1/4 cup (60 ml) vegetable oil
- 1/8 cup (2 tbsp / about 15 g) all-purpose flour
- Optional: 1/2–3/4 cup chopped nuts (walnuts or pecans)
Instructions
- Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper or a silicone baking mat.
- In a large mixing bowl, add the brownie mix, eggs, vegetable oil, and all-purpose flour.
- Stir or whisk until everything is fully combined and no dry pockets of mix remain. The batter will be thick and sticky.
- If using nuts, gently fold them into the batter until evenly distributed.
- Using a spoon or cookie scoop, drop spoonfuls of batter onto the prepared baking sheet, spacing them about 2 inches (5 cm) apart to allow for spreading.
- Bake in the preheated oven for about 9 minutes, or until the tops are set, shiny, and slightly crackly around the edges.
- Remove the baking sheet from the oven and let the cookies cool on the pan for 5 minutes to firm up.
- Carefully transfer the cookies to a wire rack and let them cool completely—or enjoy warm for extra gooey centers.
- Don’t miss out on my next recipe—thank you for following and baking along! Sweet, simple, and so satisfying!
Notes
- Every brand of brownie mix is a little different, so you may need to adjust the bake time by 1–2 minutes.
- For extra fudgy centers, slightly underbake and let the cookies finish setting on the hot pan.
- If the batter feels too runny, add up to 1 extra tablespoon of flour; if too thick, add 1–2 teaspoons of oil.
- These cookies stay soft for several days when stored in an airtight container at room temperature.
- Prep Time: 10 minutes
- Cook Time: 9 minutes per batch
- Category: Dessert, Cookies
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 cookie (1/18 of recipe)
- Calories: Approximately 140 kcal
- Sugar: About 12 g
- Sodium: About 120 mg
- Fat: About 7 g
- Saturated Fat: About 1.5 g
- Unsaturated Fat: About 5 g
- Trans Fat: 0 g
- Carbohydrates: About 18 g
- Fiber: About 1 g
- Protein: About 2 g
- Cholesterol: About 15 mg
Keywords: brownie cookies, box mix brownies, easy brownie cookie recipe, grandma-approved cookies, fudgy brownie cookies