recipe

Galaxy Mousse Cakes: the impressive, colorful mousse cake recipe

Total time: 40 min + chilling time
Difficulty: Low
Serves: 6 people
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By Cookist
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Ingredients
brownie
1
for the chocolate mousse
Semi-sweet chocolate
9 oz
chocolate caramel creamer
3/4 cup
unflavored powdered gelatin
1 packet
Water
2 tbsp
Heavy Cream
1 cup
for the mirror glaze
unflavored powdered gelatin
3 packets (3/4 oz)
water, divided
9 oz
Granulated sugar
10 1/2 oz
Sweetened Condensed Milk
7 oz
White chocolate
12 oz
gel food coloring
star sprinkles

If you’re looking for a showstopper of a dessert, then these Galaxy Mousse Cakes are just what you need. This is an impressive, but super easy dessert. Transport your guests to another galaxy with these pretty galaxy mousse cakes with a mirror glaze. They will never guess how easy it actually is to make it! The mirror glaze makes the half-spheres shiny and colorful, and a rich chocolate mousse is hiding on the inside! There’s even some texture added with a brownie on the bottom. Top them with a few star sprinkles, and it might just be the prettiest dessert you’ve ever made!

What Is A Mirror Glaze?

The secret to these Galaxy Mousse Cakes is the shiny mirror glaze. The mirror is made with white chocolate and gelatin and is usually poured over mousse cakes or other soft desserts. It creates a super shiny surface, hence the name “mirror glaze”.

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How To Make Galaxy Mousse Cakes

To make this recipe a bit easier, we used a premade brownie base. You can make your own too (use a boxed brownie mix), but it’s just easier to buy one at a bakery.

To make the chocolate mousse, melt together the chocolate and the creamer. Whisk in the melted gelatin, and then add the whipped heavy cream. This chocolate mixture is poured into silicon molds and then left to freeze for at least two hours. If the spheres are not completely hardened after two hours, leave them in the freezer a little bit longer.

To make the mirror glaze, first, mix the gelatin with cold water, and then add the sugar and condensed milk, stirring until the mixture is smooth.

Add the white chocolate and using a hand blender, blend until the mixture is completely smooth.

This mixture is divided into a few bowls (the amount depends on how many colors you want). After making the colored glazes, it’s mixed together and then poured over the cakes and sprinkled with stars. Once set, it’s ready to be served!

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Tips

You will definitely need silicone molds for this recipe, it’s the best way to make sure your spheres come out smoothly. Traditional pans won’t work as great.

Play around with a variety of colors for the mirror glaze: black, navy, light blue, purple, pink, and white. You can also top it with metallic sprinkles.

For the best results in your mirror glaze, use high-quality white chocolate. Baking chocolate often has cheaper fillers that won't behave the same way, and may give you less-than-satisfying results.

If you can’t find the caramel creamer, you can use the same amount of full-fat cream.

Variation: instead of a chocolate brownie and chocolate mousse, make your own blondie base with a blueberry or raspberry mousse.

How To Store Galaxy Mousse Cakes

Leftover glaze can be stored in an airtight container, in the fridge, for up to one week. A skin might form on the surface, so to prevent this you can place plastic wrap on top, making sure that the plastic touches the surface.

More Recipes You'll Like

Mirror Glaze

Triple Chocolate Mousse Cake

Fresh Lemon Mousse

Strawberry Mousse

Instructions

To Make the Chocolate Mousse:

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Microwave the chopped chocolate and creamer, and stir until smooth.

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Mix the gelatin and the cold water in a small bowl and microwave for 10 seconds.

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Whip 1 cup of heavy cream to firm peaks.

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Whisk the melted gelatin and chocolate mixture together.

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Add the whipped cream into the chocolate and mix.

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Fill half-sphere silicone molds with the chocolate mousse.

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Take a brownie round and press it on top of the mousse. Freeze for 2 hours while you prepare the mirror glaze.

To Make the Mirror Glaze:

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Whisk together the gelatin cold water in a bowl. Combine the remaining water, sugar, and condensed milk in a medium saucepan, heat until combined.

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Add the gelatin and stir the mixture until it dissolves.

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Add the white chocolate to the saucepan, and using an immersion blender, blend until the chocolate is melted and the mixture is very smooth.

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Divide your white chocolate glaze into 6 bowls.

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Mix the colors together by swirling them with a skewer.

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Pour glaze over mousse cakes.

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Sprinkle with stars.

Notes

The Galaxy Mousse Cakes are best served at room temperature.

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