Party Brownies Recipe
Introduction
Party Brownies are a fun and festive twist on classic brownies, topped with a rich chocolate frosting and colorful sprinkles. Perfect for celebrations or any time you want to impress with a deliciously decadent treat.

Ingredients
- 1 box brownie mix (usually 16-18 ounces)
- 6 tablespoons butter
- 1/3 cup milk
- 1 1/4 cups granulated sugar
- 1 teaspoon vanilla extract
- 1/2 teaspoon coarse kosher salt
- 1 cup semi-sweet chocolate chips
- Rainbow sprinkles
Instructions
- Step 1: Prepare the brownies according to the package directions. Use a 9×13 inch pan or a slightly smaller rectangular pan. After baking, allow them to cool for about an hour before frosting.
- Step 2: To make the frosting, melt the butter in a small saucepan over medium heat. Add the milk, sugar, vanilla, and salt. Bring the mixture to a consistent rolling boil and cook for 45 seconds, timing carefully to avoid overcooking.
- Step 3: Remove the saucepan from the heat and add the chocolate chips. Stir until fully combined, whisking briefly if there are lumps.
- Step 4: Quickly pour the warm frosting over the cooled brownies and spread evenly. Immediately sprinkle with rainbow sprinkles. The frosting will begin to set right away, so work fast.
- Step 5: Let the frosting rest at room temperature for 15 to 30 minutes before slicing. This helps create cleaner slices. Serve and enjoy the party!
Tips & Variations
- Use a timer for boiling the frosting to ensure it reaches the perfect consistency without burning.
- For a fun twist, try adding chopped nuts or using white chocolate chips instead of semi-sweet.
- If you prefer softer sprinkles, add them after the frosting starts to set.
Storage
Store leftover brownies in an airtight container at room temperature for up to 3 days. For longer storage, refrigerate for up to a week. To reheat, warm a slice gently in the microwave for 10-15 seconds to soften the frosting.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use homemade brownie batter instead of boxed mix?
Yes, homemade brownie batter works well. Just bake in a similar pan and adjust frosting application as needed.
Why does the frosting need to boil for 45 seconds?
Boiling the frosting mixture for 45 seconds ensures it reaches the right thickness and glossy finish, creating a smooth and shiny top that sets properly.
PrintParty Brownies Recipe
These Party Brownies are a delightful twist on classic brownies, featuring a rich chocolate frosting topped with colorful rainbow sprinkles. Made from a simple brownie mix and enhanced with a luscious, homemade chocolate frosting, they are perfect for celebrations and gatherings, offering a fun and festive treat that everyone will love.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 1 hour 45 minutes
- Yield: 12–16 servings 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
Brownie Base
- 1 box brownie mix (usually 16–18 ounces)
- 6 tablespoons butter
- 1/3 cup milk
Chocolate Frosting
- 1 1/4 cups granulated sugar
- 1 teaspoon vanilla extract
- 1/2 teaspoon coarse kosher salt
- 1 cup semi-sweet chocolate chips
Topping
- Rainbow sprinkles
Instructions
- Make the brownies: Prepare the brownie mix according to the package instructions, combining necessary ingredients as directed.
- Bake the brownies: Pour the batter into a 9×13 inch or slightly smaller rectangular pan and bake following the package directions. Once baked, allow the brownies to cool for about an hour before adding the frosting.
- Make the frosting: In a small saucepan over medium heat, melt the butter. Add the milk, granulated sugar, vanilla extract, and coarse kosher salt. Bring the mixture to a consistent rolling boil and maintain the boil for 45 seconds; use a timer to prevent overcooking.
- Mix in the chocolate: Remove the saucepan from heat, add the semi-sweet chocolate chips, and stir until completely combined and smooth. Whisk for a minute if there are any chocolate lumps.
- Frost the brownies: Quickly pour the warm chocolate frosting evenly over the cooled brownies. Spread promptly as the frosting begins to set immediately. Sprinkle rainbow sprinkles over the frosting.
- Rest and serve: Let the frosted brownies rest for 15 to 30 minutes to allow the frosting to set properly, which will help achieve clean slicing. Cut into pieces and serve for a fun party treat!
Notes
- Use a 9×13 inch pan or slightly smaller rectangular pan to ensure proper baking.
- Pour and spread the frosting quickly as it sets fast once off heat.
- Allow frosting to rest for at least 15 minutes for cleaner slices.
Keywords: party brownies, chocolate brownies, festive brownies, easy brownies, homemade frosting, chocolate frosting brownies

