These rainbow Oreo brownies are decadent and delicious. Packed with chocolaty goodness including Oreo cookies and chocolate chips, they are a delight for any chocolate lover.
With their colorful rainbow design, these brownies are perfect for kids’ parties, St. Patrick’s Day, baby showers, or really any occasion. Make up a batch of these sweet treats and watch them disappear.

Rainbow Oreo Brownies
Ingredients:
Oreo Brownie layer
1 cup unsalted sweet cream butter, softened
4 cups semisweet chocolate chips
1 cup sugar
4 large eggs
3 tsp pure vanilla extract
1 ½ cups flour
¼ cups Hershey baking cocoa
½ tsp kosher salt
24 Oreo cookies
Chocolate Chip Rainbow Cookie Layer
1 cup unsalted sweet cream butter, softened
1 cup sugar
½ cup light brown sugar, packed
2 tsp pure vanilla extract
2 large eggs
1 tsp kosher salt
1 tsp baking soda
3 cups flour
2 cups semi sweet chocolate chips
Red, Orange, Yellow and Neon Green gel food coloring

Directions
Preheat oven to 350 degrees and spray a 9×13 baking dish with pam baking spray
Start with making the brownie layer first
Using a medium bowl, whisk the flour, cocoa powder and salt until combined
Using a microwave safe bowl, melt the butter and 3 C semi sweet chocolate chips on 45 second increments, just until melted.
Stir until smooth
Allow the chocolate mixture to cool for about 5 minutes

Whisk in the sugar until combined
One by one, whisk in the eggs until combined
Whisk in the vanilla extract
Gradually mix in the dry ingredients until combined and smooth
Fold in the last cup of chocolate chips
Spread the brownie batter into the baking dish evenly

Place 24 oreo cookies into an even row on top of the brownie batter
Set aside while you make the rainbow layer
Chocolate Chip Rainbow Cookie Layer
Using a standing mixer with a paddle attachment, beat the butter, sugar and light brown sugar until light and fluffy
Beat in the eggs, vanilla, salt and baking soda until combined
Gradually beat in the flour until a soft dough forms
Gently fold in the chocolate chips
Evenly divide the chocolate chip batter up between the four bowls

Mix in a few drops of red into one of the bowls. Repeat with each of the other colors in separate bowls.
Starting with the red cookie dough first, scoop out about 3 tbsp of dough

Press the red dough gently on top of the Oreos and into a even thin line
Repeat the steps with the orange, yellow and green cookie doughs. You want these four colors to be in even straight rows of color.

Once you have your colored dough in straight rows, place the baking dish into the preheat oven and bake for 30-35 minutes or until a toothpick comes out clean

Allow to cool before cutting into bars.

Rainbow Oreo Brownies
These rainbow Oreo brownies are decadent and delicious. Packed with chocolaty goodness including Oreo cookies and chocolate chips, they are a delight for any chocolate lover.
With their colorful rainbow design, these brownies are perfect for kids' parties, St. Patrick's Day, baby showers, or really any occasion. Make up a batch of these sweet treats and watch them disappear.
Ingredients
Oreo Brownie layer
- 1 cup unsalted sweet cream butter softened
- 4 cups semisweet chocolate chips
- 1 cup sugar
- 4 large eggs
- 3 tsp pure vanilla extract
- 1 ½ cups flour
- ¼ cups cocoa powder
- ½ tsp kosher salt
- 24 Oreo cookies
Chocolate Chip Rainbow Cookie Layer
- 1 cup unsalted sweet cream butter softened
- 1 cup sugar
- ½ cup light brown sugar packed
- 2 tsp pure vanilla extract
- 2 large eggs
- 1 tsp kosher salt
- 1 tsp baking soda
- 3 cups flour
- 2 cups semi sweet chocolate chips
- Gel food coloring Red, Orange, Yellow and Neon Green
- Baking spray
Instructions
-
Preheat oven to 350 degrees and spray a 9×13 baking dish with pam baking spray
-
Start with making the brownie layer first
-
Using a medium bowl, whisk the flour, cocoa powder and salt until combined
-
Using a microwave safe bowl, melt the butter and 3 C semi sweet chocolate chips on 45 second increments, just until melted.
-
Stir until smooth
-
Allow the chocolate mixture to cool for about 5 minutes
-
Whisk in the sugar until combined
-
One by one, whisk in the eggs until combined
-
Whisk in the vanilla extract
-
Gradually mix in the dry ingredients until combined and smooth
-
Fold in the last cup of chocolate chips
-
Spread the brownie batter into the baking dish evenly
-
Place 24 oreo cookies into an even row on top of the brownie batter
-
Set aside while you make the rainbow layer
Chocolate Chip Rainbow Cookie Layer
-
Using a standing mixer with a paddle attachment, beat the butter, sugar and light brown sugar until light and fluffy
-
Beat in the eggs, vanilla, salt and baking soda until combined
-
Gradually beat in the flour until a soft dough forms
-
Gently fold in the chocolate chips
-
Evenly divide the chocolate chip batter up between the four bowls
-
Mix in a few drops of red into one of the bowls. Repeat with each of the other colors in separate bowls.
-
Starting with the red cookie dough first, scoop out about 3 tbsp of dough
-
Press the red dough gently on top of the Oreos and into a even thin line
-
Repeat the steps with the orange, yellow and green cookie doughs. You want these four colors to be in even straight rows of color.
-
Once you have your colored dough in straight rows, place the baking dish into the preheat oven and bake for 30-35 minutes or until a toothpick comes out clean
-
Allow to cool before cutting into bars.

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