Shamrock Brownies Green Icing

Featured in: Quick Sweet Options

These fudgy chocolate brownies are baked to perfection, then cut into festive shamrock shapes. A creamy green icing, made from powdered sugar, butter, milk, and vanilla, is spread smoothly over each brownie. The cooling and decorating steps add a touch of fun and festivity, resulting in a moist, rich treat ideal for celebrations. Optional green sprinkles enhance the visual appeal, while simple ingredients and straightforward steps make preparation easy and enjoyable.

Updated on Fri, 13 Mar 2026 15:02:20 GMT
Shamrock-shaped brownies with rich chocolate and green icing—festive St. Patricks Day dessert treat.  Save
Shamrock-shaped brownies with rich chocolate and green icing—festive St. Patricks Day dessert treat. | tirrakitchen.com

Celebrate St. Patricks Day with a delightful twist on a classic favorite—rich, fudgy chocolate brownies shaped like festive shamrocks and topped with a vibrant green vanilla icing. These easy-to-make brownies are sure to bring a splash of holiday cheer to any gathering, delighting kids and adults alike with their moist texture and creamy frosting.

Shamrock-shaped brownies with rich chocolate and green icing—festive St. Patricks Day dessert treat.  Save
Shamrock-shaped brownies with rich chocolate and green icing—festive St. Patricks Day dessert treat. | tirrakitchen.com

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This recipe offers a perfect balance of decadent chocolate and sweet vanilla icing that captures the spirit of St. Patricks Day. Whether serving at parties, school events, or a cozy family gathering, these brownies provide a cheerful and delicious treat that everyone will enjoy.

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)

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Instructions

1. 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.
2. Melt the butter
in a medium saucepan over low heat. Remove from heat and stir in the sugar, eggs, and vanilla until smooth.
3. Add dry ingredients
including cocoa powder, flour, salt, and baking powder. Mix until just combined—do not overmix.
4. Pour batter
into the prepared pan and smooth the top.
5. Bake
for 25–30 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. Do not overbake.
6. Cool the brownies
completely in the pan on a wire rack.
7. Prepare the icing
by beating 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.
8. Cut out shamrocks
by lifting the cooled brownies from the pan and using a shamrock-shaped cookie cutter.
9. Decorate each brownie
by spreading green icing over them and optionally topping with green sprinkles or sanding sugar.
10. Allow icing
to set before serving.

Zusatztipps für die Zubereitung

For the best results, use a metal cookie cutter and wipe it clean between each cut to maintain sharp shamrock edges. Cooling brownies thoroughly before cutting and frosting ensures cleaner shapes and smoother icing application.

Varianten und Anpassungen

Add mini chocolate chips or chopped nuts to the brownie batter for extra texture and flavor variety. You can also experiment with different icing shades or substitute vanilla with mint extract for a refreshing twist.

Serviervorschläge

Serve these festive shamrock brownies as a sweet centerpiece at St. Patricks Day celebrations or package them individually as charming party favors. They pair wonderfully with a hot cup of coffee or a glass of cold milk.

Fudgy chocolate brownies cut into shamrocks and topped with creamy green vanilla icing.  Save
Fudgy chocolate brownies cut into shamrocks and topped with creamy green vanilla icing. | tirrakitchen.com

These shamrock brownies are an inviting and joyful way to mark the season. With a straightforward recipe, festive presentation, and luscious flavors, they're guaranteed to bring smiles and sweet moments all around.

Recipe FAQs

What is the best way to achieve fudgy brownies?

Use melted butter and avoid overmixing the batter to maintain a dense, moist texture in the brownies.

How do I get the green icing color right?

Add green food coloring gradually to the icing mixture until you reach the desired vibrant shade.

Can I prepare the brownies ahead of time?

Yes, bake and cut the brownies in advance, then store them in an airtight container. Apply the icing just before serving.

What tools are needed to shape the brownies?

A shamrock-shaped cookie cutter works best for cutting the brownies into festive shapes with clean edges.

How do I prevent the brownies from drying out?

Cool the brownies completely on a wire rack and store them in an airtight container at room temperature for up to three days.

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Shamrock Brownies Green Icing

Fudgy chocolate brownies shaped as shamrocks with smooth green icing, perfect for St. Patrick's Day.

Prep Time
20 minutes
Cook Time
30 minutes
Total Duration
50 minutes
Created by Lily Crawford


Skill Level Easy

Cuisine American

Makes 12 Number of Servings

Diet Preferences Vegetarian

What You'll Need

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

Green Icing

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

Decoration

01 Green sprinkles or sanding sugar, optional

How To

Step 01

Prepare baking pan: Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, allowing overhang on sides 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 extract until smooth.

Step 03

Incorporate dry ingredients: Add cocoa powder, flour, salt, and baking powder to the mixture. Stir until just combined, being careful not to overmix.

Step 04

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

Step 05

Bake brownies: Bake for 25 to 30 minutes, or until a toothpick inserted in the center emerges with a few moist crumbs. Avoid overbaking.

Step 06

Cool brownies completely: Transfer pan to a wire rack and allow brownies to cool completely before proceeding with cutting or icing.

Step 07

Prepare green icing: In a bowl, beat together powdered sugar, softened butter, milk, and vanilla extract until smooth. Add green food coloring one drop at a time until desired color is achieved.

Step 08

Remove brownies from pan: Lift cooled brownies from pan using parchment paper overhang as handles.

Step 09

Cut shamrock shapes: Using a shamrock-shaped cookie cutter, press and cut shapes from the brownie slab. Wipe cutter clean between each cut.

Step 10

Ice and decorate shamrocks: Spread green icing generously over each shamrock brownie. Top with green sprinkles or sanding sugar if desired.

Step 11

Set icing before serving: Allow icing to set completely at room temperature before serving.

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Tools Needed

  • 8x8-inch baking pan
  • Parchment paper
  • Mixing bowls
  • Medium saucepan
  • Whisk or electric mixer
  • Shamrock-shaped cookie cutter
  • Spatula
  • Wire cooling rack

Allergy Info

Be sure to check all items for allergens. When unsure, seek medical guidance.
  • Contains wheat gluten
  • Contains eggs
  • Contains dairy milk
  • May contain traces of nuts or soy depending on ingredient processing

Nutrition Info (per portion)

Nutrition data is just for reference and isn't meant to replace a healthcare professional.
  • Calories: 220
  • Fats: 8 grams
  • Carbohydrates: 36 grams
  • Proteins: 2 grams

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