Viral Christmas Tree Brownies are the festive bake taking over TikTok and Instagram weeks before the holidays even begin. The idea is brilliantly simple: bake a pan of rich, fudgy brownies, slice them into triangles, and decorate each one like a tiny Christmas tree with green frosting, sprinkles, and a star on top. One viral clip of the trick has already passed 15 million views, and hundreds of creators have posted their own versions since mid-October.
What makes them so shareable is how good they look for how little effort they take. Underneath the decoration is a proper brownie — dense, chocolatey, and slightly crackly on top — so they taste every bit as good as they photograph. They are perfect for holiday parties, cookie boxes, bake sales, and an afternoon of baking with kids, and each tree is its own little serving, so there is no slicing drama at the table.
Why You’ll Love This Christmas Tree Brownies
- Instantly festive: Green frosting, sprinkles, and a star turn an ordinary brownie into the cutest thing on the dessert table.
- Properly fudgy: A butter-and-chocolate base with just enough flour gives dense, moist brownies that hold their shape when cut.
- Kid-friendly project: Little hands can frost and sprinkle their own trees, and no two need to look alike.
- Make-ahead friendly: Bake the brownies a day ahead, then decorate just before serving for the freshest look.
- Easy to scale: One 9×13-inch pan makes 12 to 16 trees, enough for a party platter or a cookie tin.
- Customizable: Swap the frosting color, add crushed candy canes, or use white chocolate drizzle for a snowy effect.
Ingredients
For the Brownies:
- 1 cup (225 g) unsalted butter
- 8 oz (225 g) dark chocolate, chopped
- 1 1/4 cups (250 g) granulated sugar
- 1/2 cup (100 g) light brown sugar, packed
- 4 large eggs, at room temperature
- 1 tablespoon vanilla extract
- 1 cup (125 g) all-purpose flour
- 1/3 cup (30 g) Dutch-process cocoa powder
- 1/2 teaspoon fine sea salt
For Decorating:
- 1 cup (225 g) unsalted butter, softened
- 2 1/2 cups (300 g) powdered sugar, sifted
- 2 tablespoons heavy cream or milk
- 1 teaspoon vanilla extract
- Green gel food coloring
- Assorted sprinkles, mini candies, and star-shaped sprinkles or small star candies
- 12 to 16 mini candy canes or pretzel sticks, for the tree trunks
Instructions
- Prepare the pan: Heat the oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper, leaving overhang on the long sides for easy lifting.
- Melt the chocolate and butter: In a heatproof bowl set over simmering water, or in short microwave bursts, melt the butter and chopped dark chocolate together until smooth. Let it cool for 5 minutes.
- Whisk in the sugars and eggs: Stir both sugars into the warm chocolate mixture until glossy. Add the eggs one at a time, whisking well after each, then stir in the vanilla.
- Fold in the dry ingredients: Sift the flour, cocoa powder, and salt over the bowl and fold gently with a spatula just until no dry streaks remain. Do not overmix, or the brownies will turn cakey.
- Bake: Pour the batter into the prepared pan and smooth the top. Bake for 25 to 28 minutes, until the edges are set and a toothpick inserted 2 inches from the edge comes out with moist crumbs. The center should still look slightly underdone — it firms up as it cools.
- Cool completely: Let the brownies cool in the pan for at least 1 hour, then lift them out using the parchment and chill for 30 minutes in the fridge. Cold brownies cut far more cleanly.
- Cut the trees: Trim the edges if you like a neat look. Cut the slab lengthwise into 3 or 4 long strips, then cut each strip into triangles, alternating the direction of each cut so you get a row of tree shapes. You should get 12 to 16 triangles.
- Make the frosting: Beat the softened butter until creamy, then beat in the powdered sugar in two additions, the cream, and the vanilla. Tint with green gel food coloring until you have a rich Christmas-tree green.
- Decorate: Pipe or spread the frosting over each triangle in a zigzag or swirl. Add sprinkles and mini candies as ornaments, press a star sprinkle or small star candy onto the tip, and push a short piece of candy cane or pretzel stick into the base as the trunk.
- Set and serve: Let the frosting set for 20 minutes at room temperature, then arrange on a platter and serve.
Tips for the Best Christmas Tree Brownies
- Chill before cutting: Warm brownies crumble. A 30-minute chill gives you sharp, clean triangles every time.
- Use a hot, dry knife: Wipe the blade between cuts for neat edges, especially if you want bakery-clean lines.
- Do not overbake: Fudgy brownies need to look slightly underdone in the center when they come out of the oven.
- Gel coloring beats liquid: Gel gives a deep green without thinning the frosting.
- Pipe with a star tip: A Wilton 1M tip makes the frosting look like pine branches with almost no effort.
Variations
- Snowy trees: Use white frosting dusted with powdered sugar and silver sprinkles for a frosted-forest look.
- Peppermint trees: Add 1/2 teaspoon peppermint extract to the frosting and top with crushed candy canes.
- Peanut butter trees: Swirl peanut butter into the batter before baking and decorate with chopped peanuts.
- Gluten-free: Swap the flour for a 1:1 gluten-free baking blend; the brownies stay fudgy.
- Mini trees: Bake in an 8×8-inch pan and cut smaller triangles for bite-size party treats.
Storage & Reheating
Store decorated trees in an airtight container at room temperature for up to 3 days, or in the fridge for up to 5 days. Let refrigerated brownies come to room temperature for 20 minutes before serving so the frosting softens. Undecorated brownie slabs freeze beautifully for up to 2 months — thaw overnight in the fridge, then cut and decorate fresh.
Frequently Asked Questions
Can I use a boxed brownie mix?
Absolutely. A good-quality boxed mix baked in a 9×13-inch pan works perfectly for this project — the decoration is the star, and a boxed base saves time. Just be sure to cool and chill the slab before cutting.
How do I stop the triangles from breaking?
Chill the slab well, use a long sharp knife, and cut with a single firm press rather than sawing. If a triangle does crack, a little frosting works as edible glue.
Can I make these ahead for a party?
Yes. Bake the brownies up to 2 days ahead and keep them wrapped at room temperature, then cut and decorate the morning of the party. The frosting sets in about 20 minutes and holds up well for hours.
What can I use instead of candy canes for trunks?
Pretzel sticks are the easiest swap and add a salty crunch. Shortbread fingers, broken biscuit sticks, or even a small piece of chocolate stick all work.
Set out a platter of these little trees with mugs of hot chocolate and watch them disappear before the ornaments do — they are the easiest way to make a dessert table feel like Christmas, weeks before the tree even goes up.