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Tall Rock Candy Christmas Cake covered in sparkling sugar crystals.

Rock Candy Christmas Cake Recipe


  • Author: Velma
  • Total Time: PT1H00M
  • Yield: 12 servings 1x
  • Diet: Vegetarian

Description

This Rock Candy Christmas Cake is a show-stopping holiday dessert featuring a soft vanilla or almond cake layered with fluffy frosting and decorated with sparkling rock candy “crystals.” The candy adds magical holiday sparkle—like frosty ice, shimmering gemstones, or a winter wonderland.


Ingredients

Scale

For the Cake

  • 2 ½ cups all-purpose flour
  • 2 cups sugar
  • 1 cup unsalted butter, softened
  • 4 large eggs
  • 1 cup whole milk
  • 2 tsp baking powder
  • ½ tsp salt
  • 1 tbsp vanilla extract
  • ½ tsp almond extract (optional, but gives a holiday bakery flavor)

For the Buttercream Frosting

  • 1 ½ cups unsalted butter, softened
  • 5 cups powdered sugar
  • 34 tbsp milk or heavy cream
  • 2 tsp vanilla extract
  • Pinch of salt

For Decoration

  • Assorted rock candy sticks or crushed rock candy (clear, red, green, blue, etc.)
  • Edible glitter or snow sprinkles (optional)
  • Gel food coloring for tinting frosting (optional)

Instructions

1. Make the Cake

  1. Preheat oven to 350°F (175°C).
  2. Grease and flour two 8-inch round cake pans.
  3. Cream butter and sugar until light and fluffy.
  4. Add eggs one at a time, mixing well.
  5. Mix in vanilla and almond extract.
  6. In a separate bowl, whisk flour, baking powder, and salt.
  7. Add dry ingredients to wet ingredients, alternating with milk.
  8. Divide batter between pans.
  9. Bake 28–32 minutes, or until a toothpick comes out clean.
  10. Cool completely.

2. Make the Frosting

  1. Beat butter until creamy (2 minutes).
  2. Add powdered sugar gradually.
  3. Add vanilla, salt, and milk until fluffy and spreadable.
  4. Tint frosting if desired.

3. Assemble the Cake

  1. Level cake layers if needed.
  2. Spread frosting between the two cakes.
  3. Apply a thin crumb coat and chill for 20 minutes.
  4. Frost the outside smoothly or with texture.

4. Decorate with Rock Candy

  1. Press crushed rock candy or crystals along the sides or top.
  2. Create a “geode” look by forming a cluster in a carved-out section.
  3. Mix colors for a magical winter effect.
  4. Add edible glitter or snowflake sprinkles.

5. Serve

  • Slice with a warm knife to cut smoothly through rock candy.
  • Enjoy immediately or store covered.

Notes

  • Rock candy adds crunch—place mostly on the outside for the best eating experience.
  • Use clear rock candy for an icy winter theme.
  • Add red and green candy for a classic Christmas look.
  • Prep Time: PT20M
  • Cook Time: PT30M
  • Category: Christmas Cakes
  • Method: Baked
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice
  • Calories: 430 Kcal
  • Sugar: 54g
  • Sodium: 260mg
  • Fat: 18g
  • Saturated Fat: 11g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 65g
  • Fiber: 0.5g
  • Protein: 4g
  • Cholesterol: 85mg