For the true chocolate obsessive, only the fudgiest will do. These 12 brownie recipes go way beyond the box — swirls, stuffings, and toppings that take chocolate to its richest, gooiest extreme.
Bake a batch, share (or don’t), and prepare for chocolate bliss.
1. Fudgy Classic Chocolate Brownies
Dense, crackly-topped, intensely chocolate — the gold standard.

Ingredients
- 1 cup butter
- 8 oz dark chocolate, chopped
- 1 1/2 cups sugar
- 4 eggs
- 1 tsp vanilla extract
- 1 cup flour
- 1/3 cup cocoa powder
- 1/2 tsp salt
- 1 cup chocolate chips
Instructions
- Heat the oven to 350°F and line a 9×9-inch pan with parchment.
- Melt the butter and dark chocolate together until smooth; cool slightly.
- Whisk in the sugar, then the eggs one at a time, then vanilla.
- Fold in the flour, cocoa, and salt just until combined.
- Stir in the chocolate chips.
- Spread in the pan and bake 28-32 minutes until the edges are set and the center is just barely jiggly.
- Cool completely before cutting for clean squares.
2. Peanut Butter Swirl Brownies
Marbled peanut butter ribbons through rich chocolate — stunning and delicious.

Ingredients
- 1 box brownie mix (plus eggs, oil, water as directed)
- 1/2 cup creamy peanut butter
- 1/4 cup powdered sugar
Instructions
- Heat the oven per the brownie mix directions and line a 9×9-inch pan.
- Prepare the batter as directed and spread in the pan.
- Mix the peanut butter with powdered sugar until smooth.
- Drop spoonfuls over the batter and swirl with a knife.
- Bake as directed until just set in the center.
- Cool completely before cutting.
3. Salted Caramel Brownies
Gooey caramel pockets with a salty crunch in every fudgy bite.

Ingredients
- 1 box brownie mix (plus eggs, oil, water as directed)
- 1/2 cup caramel sauce
- 1/2 tsp flaky sea salt
Instructions
- Heat the oven per the brownie mix directions and line a 9×9-inch pan.
- Spread half the batter in the pan.
- Drizzle with caramel sauce.
- Top with remaining batter and swirl lightly.
- Bake as directed.
- Sprinkle with flaky sea salt while warm; cool before cutting.
4. Cheesecake Brownies
Tangy cheesecake swirled through fudgy brownie — the best of both worlds.

Ingredients
- 1 box brownie mix (plus eggs, oil, water as directed)
- 8 oz cream cheese, softened
- 1/3 cup sugar
- 1 egg
- 1 tsp vanilla
Instructions
- Heat the oven per the brownie mix directions and line a 9×9-inch pan.
- Prepare the brownie batter and spread in the pan.
- Beat the cream cheese, sugar, egg, and vanilla until smooth.
- Dollop over the batter and swirl with a knife.
- Bake as directed until the cheesecake is just set.
- Cool completely, then chill 1 hour before cutting.
5. Mint Chocolate Brownies
Cool mint meets deep chocolate — a refreshing twist on fudgy.

Ingredients
- 1 box brownie mix (plus eggs, oil, water as directed)
- 1 tsp peppermint extract
- 1/2 cup crushed candy canes or mint chips
- Green food coloring (optional)
Instructions
- Heat the oven per the brownie mix directions and line a 9×9-inch pan.
- Prepare the batter, stirring in the peppermint extract.
- Spread in the pan.
- Sprinkle with mint chips or crushed candy canes.
- Bake as directed.
- Cool completely; the mint flavor deepens as they rest.
6. Walnut Fudge Brownies
Buttery toasted walnuts in every dense, chocolatey square.

Ingredients
- 1 box brownie mix (plus eggs, oil, water as directed)
- 1 cup chopped walnuts, toasted
Instructions
- Heat the oven per the brownie mix directions and line a 9×9-inch pan.
- Toast the walnuts in a dry skillet 4 minutes until fragrant.
- Prepare the batter as directed and fold in the walnuts.
- Spread in the pan.
- Bake as directed until just set.
- Cool completely before cutting.
7. Espresso Brownies
Espresso intensifies the chocolate to mocha-lover heaven.

Ingredients
- 1 cup butter
- 8 oz dark chocolate, chopped
- 1 1/2 cups sugar
- 4 eggs
- 2 tbsp instant espresso powder
- 1 cup flour
- 1/3 cup cocoa powder
- 1/2 tsp salt
Instructions
- Heat the oven to 350°F and line a 9×9-inch pan with parchment.
- Melt the butter and chocolate; whisk in the sugar and espresso powder.
- Beat in the eggs one at a time, then vanilla.
- Fold in the flour, cocoa, and salt.
- Spread in the pan.
- Bake 28-32 minutes until just set; cool completely before cutting.
8. Raspberry Swirl Brownies
Tart raspberry ribbons cut through the richness beautifully.

Ingredients
- 1 box brownie mix (plus eggs, oil, water as directed)
- 1/2 cup raspberry jam
- 1 cup fresh raspberries
Instructions
- Heat the oven per the brownie mix directions and line a 9×9-inch pan.
- Prepare the batter and spread in the pan.
- Warm the jam slightly and dollop over the batter; swirl with a knife.
- Scatter fresh raspberries on top.
- Bake as directed.
- Cool completely before cutting.
9. S'mores Brownies
Toasty marshmallow, graham crunch, and gooey chocolate — campfire in a pan.

Ingredients
- 1 box brownie mix (plus eggs, oil, water as directed)
- 1 cup mini marshmallows
- 1 cup crushed graham crackers
- 1/2 cup chocolate chips
Instructions
- Heat the oven per the brownie mix directions and line a 9×9-inch pan.
- Prepare the batter and fold in half the graham crumbs.
- Spread in the pan and bake 5 minutes less than directed.
- Top with marshmallows, remaining graham crumbs, and chocolate chips.
- Broil 1-2 minutes until the marshmallows toast.
- Cool before cutting.
10. Triple Chocolate Brownies
Cocoa, melted chocolate, AND chocolate chips — maximum chocolate density.

Ingredients
- 1 cup butter, melted
- 2 cups brown sugar
- 2 eggs
- 1 tsp vanilla
- 2 cups flour
- 1 tsp baking powder
- 1/2 tsp salt
- 1 1/2 cups chocolate chips, divided
Instructions
- Heat the oven to 350°F and line a 9×9-inch pan with parchment.
- Melt 1 cup of the chocolate chips with the butter; cool slightly.
- Whisk in the brown sugar, eggs, and vanilla.
- Fold in the flour, cocoa, baking powder, and salt.
- Stir in the remaining chocolate chips.
- Spread in the pan and bake 30-34 minutes; cool completely.
11. Nutella Stuffed Brownies
A molten Nutella core hiding inside each fudgy square.

Ingredients
- 1 box brownie mix (plus eggs, oil, water as directed)
- 1/2 cup chocolate hazelnut spread
Instructions
- Freeze tablespoon-sized dollops of Nutella on parchment for 1 hour.
- Heat the oven per the brownie mix directions and line a 9×9-inch pan.
- Spread half the batter in the pan.
- Place the frozen Nutella dollops over the batter.
- Cover with remaining batter.
- Bake as directed; cool completely before cutting.
12. Mexican Hot Chocolate Brownies
Warm cinnamon and a whisper of cayenne ignite deep chocolate.

Ingredients
- 1 cup butter
- 8 oz dark chocolate, chopped
- 1 1/2 cups sugar
- 4 eggs
- 1 tsp vanilla
- 1 cup flour
- 1/3 cup cocoa powder
- 1 tsp cinnamon
- 1/4 tsp cayenne pepper
- 1/2 tsp salt
Instructions
- Heat the oven to 350°F and line a 9×9-inch pan with parchment.
- Melt the butter and chocolate; whisk in the sugar.
- Beat in the eggs and vanilla.
- Fold in the flour, cocoa, cinnamon, cayenne, and salt.
- Spread in the pan.
- Bake 28-32 minutes; cool completely and dust with cinnamon before serving.