Best Fudgiest Brownies

With a combination of butter, oil, and cocoa powder, these fudgy brownies are irresistibly rich and moist. Filled with chocolate chips and baked to perfection, they’re the perfect treat for any occasion.

Ingredients

1 cup butter melted and cooled
2 Tablespoon vegetable oil
1 1/4 cup granulated sugar
1 cup packed brown sugar
4 large eggs room temperature
1 Tablespoon vanilla extract
3/4 teaspoon salt
1 cup all-purpose flour
1 cup cocoa powder
7 ounces roughly chopped chocolate or use chocolate chips

Instructions

Preheat the oven: Preheat the oven to 350°F. Lightly grease a 9x13-inch baking pan with cooking spray or line it with parchment paper for easy removal.
Mix the wet ingredients: In a medium-sized bowl, combine 1 cup melted butter, 2 tablespoons vegetable oil, 1 1/4 cups sugar, and 1 cup packed brown sugar. Whisk well to combine. Add the 4 large eggs and 1 tablespoon vanilla extract, beating until the mixture becomes lighter in color.
Add the dry ingredients: Sift in 1 cup flour, 1 cup cocoa powder, and 3/4 teaspoon salt. Gently fold the dry ingredients into the wet ingredients until just combined. Be careful not to overmix, as this can affect the texture of the brownies.
Fold in the chocolate: Fold in 3/4 of the chopped chocolate or chocolate chips into the batter.
Prepare the pan: Pour the brownie batter into the prepared 9x13-inch pan, smoothing the top out evenly. Sprinkle the remaining chopped chocolate or chocolate chips on top.
Bake: Bake at 350°F for 18-20 minutes, or until the brownies are set and a toothpick inserted into the center comes out clean or with just a few moist crumbs. Be careful not to overbake—thinner brownies may bake quicker.
Cool and serve: Let the brownies cool in the pan before cutting into squares and serving.

Notes

Storage: Store brownies in an airtight container at room temperature for up to 4 days. For longer storage, keep them in the fridge for up to a week or freeze for up to 3 months.
Texture: For ultra-fudgy brownies, be careful not to overbake them. The center should still feel slightly soft when touched.
Variation: For added texture, you can fold in chopped nuts, such as walnuts or pecans, along with the chocolate.