Full Sheet Pan Brownie Recipes

Steps:

• Preheat the oven to 325 degrees F. Spray an 18-by-13-inch sheet pan with cooking spray and top with parchment, leaving a 1-inch overhang on each of the short sides. Spray the parchment with cooking spray.
• Remove 1/4 cup of the cookie dough and reserve. Divide the remaining cookie dough into 3 equal portions. With the long sides of the prepared sheet pan positioned horizontally in front of you, visualize the pan divided into 8 even sections: 4 sections in the top row and 4 sections in the bottom row. Press one portion of the cookie dough into the top right section. Press a second portion of the dough into the section diagonally below and to the left of the first. Press the last portion of the dough into the bottom left corner.
• Prepare the brownie batter according to the package directions. Divide the batter among the remaining 5 sections (about 1/2 cup batter per section).
• Working from left to right on the top row, swirl 1 tablespoon of the peanut butter into the brownie batter in the top left corner. Press 6 of the chocolate sandwich cookies on top of the batter in the next section. Roll the reserved cookie dough into balls and arrange on top of each chocolate sandwich cookie and in the large diamond-shaped gaps between the cookies (do not place the balls too close to the edges of the section, or they may spread into the other sections). Swirl the dulce de leche into the batter in the next section and top with a sprinkle of coarse sea salt. Press the candy-coated chocolates into the cookie dough in the top right section.
• Working from left to right on the bottom row, press the crushed potato chips into the cookie dough in the first section, then arrange the pretzels on top. Press the graham cracker bears into the brownie batter in the next section. Top the next cookie section with alternating rows of cream cheese bits and white chocolate chips. Last, sprinkle the semisweet chocolate chips on the final section of brownie batter.
• Bake until the cookies are golden and the brownies are set, 25 to 30 minutes. Cool for 10 minutes in the pan on a rack.
• Meanwhile, prepare the toppings: Microwave the remaining 1 tablespoon peanut butter in a small microwave-safe bowl until smooth and pourable, about 15 seconds. Crush the remaining 2 chocolate sandwich cookies. Transfer the frosting to a pastry bag.
• Drizzle the warm peanut butter over the swirled peanut-butter brownie section and top with the crushed peanuts. Sprinkle the remaining crushed chocolate sandwich cookies over the section containing the whole cookies. Swirl the frosting over the candy-coated chocolate candy section and top with the rainbow sprinkles. Top the graham cracker bears with the mini marshmallows and toast with a small kitchen torch (or broil the marshmallows under a low broiler for about 1 minute). Last, sprinkle the freeze-dried raspberries over the chocolate chip brownie on the bottom right.
• Lift the finished brownie-cookie bar out of the pan and remove the parchment paper. Slice vertically in 8 pieces and horizontally in 4 pieces to create multi-flavored pieces.

Steps:

• Preheat the oven to 350 degrees.
• Butter and flour a 12 x 18 x 1-inch baking sheet.
• Melt together the butter, 1 pound of chocolate chips, and the unsweetened chocolate in a medium bowl over simmering water. Allow to cool slightly. In a large bowl, stir (do not beat) together the eggs, coffee granules, vanilla, and sugar. Stir the warm chocolate mixture into the egg mixture and allow to cool to room temperature.
• In a medium bowl, sift together 1 cup of flour, the baking powder, and salt. Add to the cooled chocolate mixture. Toss the walnuts and 12 ounces of chocolate chips in a medium bowl with 1/4 cup of flour, then add them to the chocolate batter. Pour into the baking sheet.
• Bake for 20 minutes, then rap the baking sheet against the oven shelf to force the air to escape from between the pan and the brownie dough. Bake for about 15 minutes, until a toothpick comes out clean. Do not overbake! Allow to cool thoroughly, refrigerate, and cut into 20 large squares.

Steps:

• Position a rack in center of oven; preheat to 325°F. Very generously butter an 18x13" rimmed baking sheet (do not line with parchment).
• Melt remaining 1/2 cup butter in a small heatproof bowl in the microwave or set over a pot of barely simmering water. Mix sugar, cocoa powder, vanilla, and salt in a medium bowl. Pour butter over and stir until smooth. Add eggs one at a time, stirring vigorously with a wooden spoon or rubber spatula after each addition, until batter is thick, shiny, and smooth. Stir in flour until well incorporated, then beat vigorously for 30-40 strokes. Stir in nuts or chocolate chips.
• Using a spatula, spread batter into a thin, even layer to edges and into corners of prepared sheet (batter will seem scant but brownies will rise to about 1/4" thick).
• Bake brownies until firm to the touch and a tester inserted into the center comes out with moist crumbs (not runny batter) attached, 15-18 minutes.
• Transfer to a wire rack and let cool completely. Cut into 36 pieces and serve.
• Do Ahead
• Brownies can be made 5 days ahead. Store in an airtight container at room temperature, or freeze up to 6 months.

Steps:

• Preheat oven to 350 degrees F.
• Spray a half baking sheet (18 x 13 x 1 inch) with nonstick cooking spray; set aside.
• In a large mixing bowl or stand mixer, beat together eggs and cocoa powder.
• Add salt and baking powder and mix until combined.
• Mix in vanilla.
• Add melted butter and sugar and mix until well combined.
• Mix in flour until well combined.
• Spread in prepared baking sheet.
• Bake for 35-40 minutes, or until an inserted toothpick comes out clean.

Steps:

• In a large mixing bowl, combine the flour and the sugar.
• In a heavy saucepan, combine butter, shortening, water, and cocoa. Stir and heat to boiling.
• Pour boiling mixture over the flour and sugar in the bowl.
• Add the buttermilk, eggs, baking soda, and vanilla. Mix well using a wooden spoon or high speed on an electric mixer.
• Pour into a well greased cookie sheet (17 1/2 x 11 inch) pan.
• Bake at 400 degrees for 15-18 minutes or until brownies test done in center.
• While brownies bake, prepare the frosting. In a saucepan, combine the butter, cocoa, and milk. Heat to boiling and stirring constantly.
• Mix in the powdered sugar and vanilla until frosting is smooth (you may have to whisk it).
• Pour warm frosting over brownies as soon as you take them out of the oven. Let cool and cut into 40 bars.