St Patricks Shamrock Brownies

Featured in: Sweet Prairie Treats

These fudgy chocolate brownies are baked to perfection and crafted into festive shamrock shapes. The buttery batter blends cocoa powder and vanilla for a rich flavor, while the green icing adds a creamy, vibrant finish. Baked and cooled in an 8x8 pan, then cut with a shamrock cutter, they make ideal treats for any spring or St. Patrick's celebration. Optional decorations like green sprinkles add a crunchy contrast. Store in an airtight container to maintain freshness.

Updated on Wed, 25 Feb 2026 07:14:26 GMT
Shamrock-shaped brownies topped with vibrant green icing, perfect for festive St. Patrick's Day celebrations and sweet treats. Save to Pinterest
Shamrock-shaped brownies topped with vibrant green icing, perfect for festive St. Patrick's Day celebrations and sweet treats. | honeyprairie.com

There's something magical about transforming a classic brownie into a festive celebration treat. These St. Patrick's Day Shamrock Brownies combine the rich, fudgy decadence of homemade chocolate brownies with the whimsical charm of shamrock shapes and vibrant green icing. Whether you're hosting a St. Patrick's Day party, looking for a fun baking project with kids, or simply want to bring a touch of Irish luck to your dessert table, these brownies deliver both flavor and festivity in every bite.

Shamrock-shaped brownies topped with vibrant green icing, perfect for festive St. Patrick's Day celebrations and sweet treats. Save to Pinterest
Shamrock-shaped brownies topped with vibrant green icing, perfect for festive St. Patrick's Day celebrations and sweet treats. | honeyprairie.com

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The beauty of these shamrock brownies lies in their simplicity. The brownie base comes together quickly in one saucepan, creating a dense, chocolatey foundation that's neither cakey nor overly sweet. Once baked and cooled, the real fun begins: cutting out adorable shamrock shapes and adorning them with smooth, creamy green icing. The contrast of dark chocolate and bright green creates a stunning visual that's sure to impress guests of all ages.

Ingredients

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  • For the Brownies: 1/2 cup (115 g) unsalted butter, 1 cup (200 g) granulated sugar, 2 large eggs, 1 teaspoon vanilla extract, 1/3 cup (40 g) unsweetened cocoa powder, 1/2 cup (65 g) all-purpose flour, 1/4 teaspoon salt, 1/4 teaspoon baking powder
  • For the Green Icing: 1 1/2 cups (180 g) powdered sugar, 2 tablespoons unsalted butter (softened), 2 tablespoons milk, 1/2 teaspoon vanilla extract, green food coloring as needed
  • For Decoration: Green sprinkles or sanding sugar (optional)

Instructions

Step 1: Prepare the Pan
Preheat the oven to 350°F (175°C). Line an 8x8-inch (20x20 cm) baking pan with parchment paper, leaving an overhang for easy removal.
Step 2: Make the Brownie Batter
In a medium saucepan, melt the butter over low heat. Remove from heat and stir in the sugar, eggs, and vanilla until smooth.
Step 3: Add Dry Ingredients
Add the cocoa powder, flour, salt, and baking powder. Mix until just combined—do not overmix.
Step 4: Bake
Pour the batter into the prepared pan and smooth the top. Bake for 25–30 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. Do not overbake.
Step 5: Cool
Let the brownies cool completely in the pan on a wire rack.
Step 6: Prepare the Icing
While brownies cool, prepare the icing: In a bowl, beat together powdered sugar, softened butter, milk, and vanilla extract until smooth. Add green food coloring a few drops at a time until desired shade is reached.
Step 7: Cut Shamrock Shapes
Lift the cooled brownies from the pan. Using a shamrock-shaped cookie cutter, cut out shamrock brownies.
Step 8: Decorate
Spread green icing over each shamrock brownie. Decorate with green sprinkles or sanding sugar if desired.
Step 9: Set and Serve
Allow icing to set before serving.

Zusatztipps für die Zubereitung

For best results, use a metal cookie cutter and wipe it clean between cuts to ensure sharp, clean shamrock shapes. The brownies must be completely cool before cutting, or they'll crumble. Don't discard the scraps—they can be enjoyed as brownie bites or crumbled over ice cream for an indulgent topping. When mixing the batter, stir just until the ingredients are combined; overmixing can lead to tougher brownies. The key to fudgy brownies is not overbaking, so watch carefully and remove them when a toothpick comes out with moist crumbs, not completely clean.

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Varianten und Anpassungen

Add mini chocolate chips or chopped nuts to the brownie batter for extra texture and flavor. For a mint twist, add 1/4 teaspoon peppermint extract to the green icing. You can also experiment with different cookie cutter shapes for other holidays or celebrations. If you prefer a thicker brownie, use a smaller pan or increase the recipe by 1.5 times. For a dairy-free version, substitute the butter with coconut oil and use non-dairy milk in the icing. Store brownies in an airtight container at room temperature for up to 3 days, or refrigerate for up to a week.

Serviervorschläge

These shamrock brownies are perfect for St. Patrick's Day parties, classroom celebrations, or potluck gatherings. Arrange them on a festive green platter with additional shamrock decorations for a stunning presentation. Serve alongside a cold glass of milk or a cup of Irish coffee for adults. They also make wonderful gifts when packaged in clear cellophane bags tied with green ribbon. For an extra-special dessert, serve warm brownies with a scoop of vanilla ice cream and a drizzle of chocolate sauce. The shamrock shape makes them ideal for individual servings at dessert tables.

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| honeyprairie.com

These St. Patrick's Day Shamrock Brownies are more than just a dessert—they're a celebration of creativity, tradition, and the simple joy of homemade treats. The combination of rich chocolate and festive presentation makes them a guaranteed hit at any gathering. Whether you're an experienced baker or just starting out, this easy recipe delivers impressive results that will have everyone asking for seconds. So gather your ingredients, grab that shamrock cookie cutter, and get ready to spread a little Irish luck through the magic of chocolate and green icing.

Questions & Answers

What is the best way to cut shamrock shapes?

Use a metal shamrock-shaped cookie cutter and wipe it clean between cuts for clean edges and ease of use.

How do I know when the brownies are perfectly baked?

Insert a toothpick in the center; if it comes out with a few moist crumbs, the brownies are ready. Avoid overbaking for fudginess.

Can I add mix-ins to the brownie batter?

Yes, mini chocolate chips or chopped nuts can be folded into the batter for added texture and flavor.

How should I store these brownies?

Keep brownies in an airtight container at room temperature for up to 3 days to maintain freshness and softness.

What gives the icing its green color?

Green food coloring is added to powdered sugar, softened butter, milk, and vanilla to create the creamy green icing glaze.

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St Patricks Shamrock Brownies

Rich chocolate brownies shaped like shamrocks with creamy green icing, perfect for festive celebrations.

Prep duration
20 minutes
Cook duration
30 minutes
Overall time needed
50 minutes
Recipe by Honey Prairie Abigail Greene


Skill Level Easy

Cuisine type American

Makes 12 Number of portions

Diet specifications Meatless

What You'll Need

For the Brownies

01 1/2 cup unsalted butter
02 1 cup granulated sugar
03 2 large eggs
04 1 teaspoon vanilla extract
05 1/3 cup unsweetened cocoa powder
06 1/2 cup all-purpose flour
07 1/4 teaspoon salt
08 1/4 teaspoon baking powder

For the Green Icing

01 1 1/2 cups powdered sugar
02 2 tablespoons unsalted butter, softened
03 2 tablespoons milk
04 1/2 teaspoon vanilla extract
05 Green food coloring, as needed

For Decoration

01 Green sprinkles or sanding sugar, optional

How to Make It

Step 01

Prepare Pan and Preheat Oven: Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, leaving overhang for easy removal.

Step 02

Melt Butter and Combine Wet Ingredients: In a medium saucepan, melt butter over low heat. Remove from heat and stir in sugar, eggs, and vanilla until smooth.

Step 03

Incorporate Dry Ingredients: Add cocoa powder, flour, salt, and baking powder to the mixture. Mix until just combined, avoiding overmixing.

Step 04

Transfer Batter to Pan: Pour batter into the prepared pan and smooth the top surface evenly.

Step 05

Bake Brownies: Bake for 25-30 minutes until a toothpick inserted in the center comes out with a few moist crumbs. Do not overbake.

Step 06

Cool Brownies: Let brownies cool completely in the pan on a wire rack before proceeding.

Step 07

Prepare Green Icing: In a bowl, beat together powdered sugar, softened butter, milk, and vanilla extract until smooth. Add green food coloring a few drops at a time until desired shade is achieved.

Step 08

Cut Shamrock Shapes: Lift cooled brownies from pan and use a shamrock-shaped cookie cutter to cut out individual shamrock pieces.

Step 09

Apply Icing and Decorate: Spread green icing over each shamrock brownie. Decorate with green sprinkles or sanding sugar if desired.

Step 10

Set Icing and Serve: Allow icing to set completely before serving.

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Essential tools

  • 8x8-inch baking pan
  • Parchment paper
  • Mixing bowls
  • Saucepan
  • Whisk or electric mixer
  • Shamrock cookie cutter
  • Spatula

Allergy Details

Go through all ingredients to spot potential allergies. If unsure, check with a health expert.
  • Contains wheat and gluten
  • Contains eggs
  • Contains milk and dairy products
  • May contain traces of nuts or soy depending on ingredient sourcing

Nutrition details (per portion)

Details for informational use only — not a substitute for a medical professional.
  • Energy (calories): 220
  • Lipids: 8 g
  • Carbohydrates: 36 g
  • Proteins: 2 g

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