Brownies are a classic dessert beloved for their rich, chocolatey flavor and chewy, fudgy texture. Making a big batch in a 9×13 pan is perfect for sharing at parties, family gatherings, or any time you need a reliable, crowd-pleasing treat. This homemade brownie mix recipe is simple to prepare, uses pantry staples, and delivers bakery-style results every time.
Ingredients
- 1 cup (2 sticks) unsalted butter, melted and slightly cooled
- 2 1/4 cups granulated sugar
- 4 large eggs, at room temperature
- 1 tablespoon pure vanilla extract
- 1 cup unsweetened cocoa powder (natural or Dutch-process)
- 1 cup all-purpose flour
- 1/2 teaspoon baking powder
- 1/2 teaspoon salt
- 1 cup chocolate chips or chunks (semisweet or bittersweet recommended)
- Optional: 1/2 cup chopped nuts (walnuts or pecans)
Instructions
- Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking pan or line it with parchment paper, leaving some overhang for easy removal.
- In a large mixing bowl, whisk together the melted butter and granulated sugar until smooth and glossy, about 1 minute.
- Add the eggs one at a time, whisking well after each addition. Stir in the vanilla extract.
- Sift in the cocoa powder, flour, baking powder, and salt. Gently fold the dry ingredients into the wet mixture using a spatula or wooden spoon until just combined. Do not overmix; stop as soon as you no longer see dry flour.
- Fold in the chocolate chips and, if using, the chopped nuts.
- Spread the batter evenly in the prepared 9×13 pan. Use a spatula to smooth the top.
- Bake for 28–32 minutes, or until the edges are set and a toothpick inserted in the center comes out with a few moist crumbs clinging to it (not wet batter).
- Remove from the oven and let cool completely in the pan on a wire rack before cutting into squares.
- For clean cuts, lift brownies out using the parchment overhang and slice with a sharp knife, wiping the blade between cuts.
Tips
- Substitutions: You can use vegetable oil in place of butter for a slightly chewier texture. For gluten-free brownies, substitute a 1:1 gluten-free baking flour blend.
- Mix-ins: Stir in up to 1 cup of extras like white chocolate chips, peanut butter chips, or dried cherries for unique flavors.
- Don’t overbake: Brownies continue to cook as they cool. Remove them from the oven when a toothpick comes out with moist crumbs, not clean.
- Storage: Brownies stay freshest when tightly covered at room temperature; avoid refrigerating unless your kitchen is very warm.
Serving Suggestions
- Serve warm brownies with a scoop of vanilla ice cream and a drizzle of chocolate sauce for an indulgent dessert.
- Dust cooled brownies with powdered sugar for a simple, elegant touch.
- Top brownies with a dollop of whipped cream and fresh berries for a lighter finish.
- Cut brownies into small squares for easy serving at potlucks, bake sales, or lunchboxes.
Variations
- Mocha Brownies: Add 1 tablespoon of instant espresso powder with the dry ingredients to enhance the chocolate flavor with a subtle coffee kick.
- Salted Caramel Brownies: Swirl 1/3 cup of store-bought or homemade caramel sauce into the batter before baking, and sprinkle with flaky sea salt.
- Peanut Butter Swirl: Drop spoonfuls of creamy peanut butter over the batter and swirl with a knife before baking.
- Mint Chocolate: Add 1/2 teaspoon peppermint extract with the vanilla, and use chopped Andes mints or mint chips as a mix-in.
- Double Chocolate: Mix in both dark and milk chocolate chips for extra richness and texture.
Storage and Reheating
Store cooled brownies in an airtight container at room temperature for up to 4 days. To keep them extra moist, place a slice of bread in the container; it helps prevent the brownies from drying out. For longer storage, individually wrap brownies in plastic wrap and place them in a freezer-safe bag or container. They can be frozen for up to 2 months. Thaw at room temperature for a few hours or overnight in the refrigerator before serving.
To reheat brownies and restore their gooey texture, warm individual squares in the microwave for 10–15 seconds. For a larger batch, cover the pan loosely with foil and warm in a 300°F (150°C) oven for 8–10 minutes. Avoid overheating, which can dry them out.
Frequently Asked Questions
- Can I halve this recipe for a smaller pan?
Yes, you can halve all the ingredients and bake in an 8×8-inch or 9×9-inch pan. The baking time will be around 22–26 minutes—check for doneness starting at 22 minutes. - Why are my brownies dry or cakey?
Overbaking is the most common cause of dry brownies. Remove them from the oven when a toothpick comes out with moist crumbs. Also, measuring flour by spooning it into the cup and leveling off helps prevent adding too much. - Can I use Dutch-process cocoa powder?
Yes, both natural and Dutch-process cocoa powder work in this recipe. Dutch-process will give a deeper color and slightly smoother flavor, while natural cocoa lends a more robust chocolate taste. - How do I get shiny brownie tops?
Whisking the melted butter and sugar thoroughly helps create the classic shiny, crackly top. Make sure to mix well before adding the eggs, and don’t overmix once the dry ingredients are added. - Is it safe to eat brownies slightly underbaked?
Brownies should be baked until just set in the center with no raw batter visible. Slightly underbaked brownies are safe as long as the eggs reach 160°F (71°C), but avoid consuming raw batter. - Can I make the batter ahead of time?
It’s best to bake the brownies right after mixing for the best texture. However, you can prepare a dry “brownie mix” (combine the sugar, cocoa, flour, baking powder, and salt) and store it in an airtight container for up to 2 months. Add the wet ingredients and bake when ready.