Triple Layer Sweets

Featured in Irresistible Desserts.

These luxurious triple-layer brownies feature a fudgy chocolate base, mint-chocolate chip mousse middle, and glossy chocolate top. While they require time and patience to assemble, the result is a stunning dessert perfect for special occasions.

Casey
Updated on Mon, 20 Jan 2025 20:07:21 GMT
A close-up of a layered dessert featuring chocolate brownie at the base, chocolate mousse in the middle, and a green mint frosting on top, garnished with chocolate chips. Pin it
A close-up of a layered dessert featuring chocolate brownie at the base, chocolate mousse in the middle, and a green mint frosting on top, garnished with chocolate chips. | cookingwithcasey.com

Mint Chocolate Chip Mousse Brownies are the ultimate dessert for chocolate and mint lovers. This treat combines a rich, fudgy brownie base, a light mint mousse layer, and a glossy chocolate glaze. Perfect for any occasion, these brownies are indulgent, refreshing, and sure to impress.

Why These Brownies Shine

These brownies are a decadent combination of flavors and textures. The dense brownie base is balanced by the airy mousse, while the mint and chocolate blend together harmoniously. With three indulgent layers, this dessert is a show-stopper perfect for gatherings or special occasions.

Essential Ingredients For Success

  • Brownie Base Components:
    • Unsalted butter: 10 oz (283g) at 65°F (18°C), European-style (82% butterfat)
    • Granulated sugar: 2 1/2 cups (500g) pure cane, free of lumps
    • Dutch-process cocoa: 1 3/4 cups (175g), sifted, 22-24% fat content
    • Fine sea salt: 1 teaspoon (6g)
    • Pure vanilla extract: 1 teaspoon (5ml), clear variety
    • Mint extract: 1/2 teaspoon (2.5ml), pure peppermint oil-based
    • Large eggs: 4 (200g) at 65°F (18°C), grade AA
    • All-purpose flour: 1 cup (120g) at 70°F (21°C), protein content 10-12%
  • Mint Mousse Components:
    • White chocolate: 8 oz (227g), 30-33% cocoa butter content
    • Heavy cream: 2 cups (480ml) at 35-40°F (2-4°C), 36% milkfat
    • Peppermint extract: 1/4 teaspoon (1.25ml)
    • Professional food coloring: 2-3 drops green, 1 drop yellow
    • Semi-sweet chocolate: 4 oz (113g) finely chopped to 1/8-inch pieces
  • Chocolate Glaze Components:
    • Semi-sweet chocolate: 8 oz (227g), 54-56% cacao, chopped to 1/4-inch pieces
    • Heavy cream: 1 cup (240ml) at 35-40°F (2-4°C)
    • Light corn syrup: 1 tablespoon (15ml) for shine

Step By Step Instructions

Environment Preparation
Preheat oven to exactly 350°F (177°C), verified with separate thermometer. Position rack in center. Line 9x13-inch pan with parchment, leaving 2-inch overhang.
Brownie Base Development
Heat butter, sugar, cocoa, and salt in double boiler to 120°F (49°C). Mixture should be smooth with no sugar granules. Cool to 80°F (27°C). Beat in eggs one at a time until batter reaches ribbon stage. Fold flour until no dry spots remain.
Brownie Baking Protocol
Spread batter evenly (1/2-inch thickness). Bake 25-28 minutes until internal temperature reaches 190°F (88°C). Toothpick should show moist crumbs. Cool to 70°F (21°C).
Mousse Formation
Melt white chocolate with 3/4 cup cream to 115°F (46°C). Cool to 75°F (24°C). Whip remaining cream to medium peaks (43-45°F/6-7°C). Add extracts and coloring. Fold in chocolate mixture until mousse holds shape (40-45°F/4-7°C).
Mousse Application
Spread mousse evenly (3/4-inch layer) over cooled brownies. Texture should be smooth with no air pockets. Chill until set (40°F/4°C), about 1 hour.
Glaze Development
Heat cream to exactly 190°F (88°C). Pour over chocolate, let stand 2 minutes. Stir until smooth and glossy (115°F/46°C). Add corn syrup. Cool to 90°F (32°C) before pouring.
Final Assembly
Pour glaze at 90°F (32°C) over set mousse. Spread to edges, ensuring complete coverage. Refrigerate 3 hours minimum until glaze reaches 40°F (4°C).

Tips for Success

  • Chill for Clean Layers: Allow each layer to cool completely before adding the next to ensure neat slices.
  • Cool White Chocolate: Ensure melted white chocolate is fully cooled before folding into whipped cream to maintain texture.
  • Use a Hot Knife: Slice through the chilled brownies with a hot knife for clean edges.

Variations and Storage

  • Sweet Glaze: Substitute milk chocolate for a sweeter glaze.
  • Freeze for Later: Wrap tightly and freeze for up to 2 months. Thaw in the fridge before serving.
  • Festive Touch: Add crushed peppermint candies or a drizzle of white chocolate for extra flair.
A close-up of a layered dessert featuring a chocolate brownie base, with mint green frosting topped with chocolate chips and shaved chocolate. Pin it
A close-up of a layered dessert featuring a chocolate brownie base, with mint green frosting topped with chocolate chips and shaved chocolate. | cookingwithcasey.com

A Perfect Dessert for Any Occasion

Mint Chocolate Chip Mousse Brownies are a delightful combination of rich and refreshing layers. With their fudgy base, creamy mint mousse, and glossy glaze, these brownies are ideal for parties, holidays, or simply satisfying your chocolate cravings. They're sure to become a crowd favorite!

Frequently Asked Questions

→ Why do the layers need so much cooling time?

Each layer must be completely cool before adding the next to prevent melting and ensure clean, distinct layers in the final dessert.

→ What's the best way to cut clean squares?

Use a sharp knife dipped in hot water and dried between each cut. Clean the knife after every slice for the neatest presentation.

→ Can I skip the food coloring?

Yes, the food coloring is purely for appearance. The mint flavor will be the same without it, the mousse will just be white.

→ Why use both vanilla and mint extracts?

Vanilla enhances the chocolate flavor while mint adds the signature freshness. Using both creates a more complex, balanced taste.

→ How long do these brownies keep?

Stored in an airtight container in the fridge, they'll keep for up to 5 days. They can also be frozen for up to 2 months.

Mint Brownies

Rich fudgy brownies layered with mint chocolate chip mousse and topped with glossy chocolate glaze. A showstopping dessert that combines chocolate and mint.

Prep Time
30 Minutes
Cook Time
208 Minutes
Total Time
238 Minutes
By: Casey


Difficulty: Difficult

Cuisine: American

Yield: 24 Servings (24)

Dietary: Vegetarian

Ingredients

01 10 oz unsalted butter, cubed.
02 2 1/2 cups granulated sugar.
03 1 3/4 cups unsweetened cocoa powder.
04 1 tsp salt.
05 1 tsp vanilla extract.
06 1/2 tsp mint extract.
07 4 large eggs.
08 1 cup all-purpose flour.
09 1/2 cup white chocolate chips.
10 2 cups heavy cream, divided.
11 Pinch of salt.
12 Peppermint extract to taste.
13 Green and yellow food coloring.
14 1/2 cup finely chopped semi-sweet chocolate.
15 Chopped semi-sweet chocolate.
16 Heavy cream.

Instructions

Step 01

Preheat oven to 350°F (177°C).

Step 02

Line and grease 9x13-inch pan.

Step 03

Melt butter, sugar, cocoa, and salt over low heat.

Step 04

Add vanilla and mint extracts.

Step 05

Beat in eggs one at a time.

Step 06

Fold in flour until combined.

Step 07

Bake for 25-28 minutes until done.

Step 08

Melt white chocolate with cream for mousse.

Step 09

Whip remaining cream and add flavorings.

Step 10

Layer mousse on cooled brownies.

Step 11

Make glaze and pour over mousse.

Step 12

Refrigerate for 3+ hours until set.

Notes

  1. Three-layer dessert requiring complete cooling between layers.
  2. Can be garnished with mint leaves or crushed peppermint candies for decoration.

Tools You'll Need

  • 9x13 baking pan.
  • Saucepan.
  • Mixing bowls.
  • Electric mixer.
  • Spatula.
  • Parchment paper.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Milk (butter, cream, chocolate).
  • Eggs.
  • Wheat (flour).
  • Soy (may contain in chocolate).

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 380
  • Total Fat: 22 g
  • Total Carbohydrate: 45 g
  • Protein: 5 g