• For the Cake Layers:

2 ¾ cups (340g) all-purpose flour – Provides structure to the cake.

1 tbsp baking powder – Helps the cake rise for a fluffy texture.

½ tsp baking soda – Balances acidity for even baking.

½ tsp salt – Enhances the flavors.

1 cup (230g) unsalted butter, softened – Adds richness and moisture.

2 cups (400g) granulated sugar – Sweetens the cake and aids in a tender crumb.

4 large eggs, at room temperature – Adds structure and stability.

1 tbsp vanilla extract – Infuses the cake with a classic, comforting flavor.

1 cup (240ml) whole milk, at room temperature – Keeps the cake moist and soft.

Gel food coloring (assorted colors) – For those signature rainbow layers.

• For the Buttercream Frosting:

1 ½ cups (340g) unsalted butter, softened – The creamy base for a smooth frosting.

4 cups (500g) powdered sugar – Creates a light, fluffy consistency.

2-3 tbsp heavy cream – Adjusts the texture for easy spreading.

1 tsp vanilla extract – Complements the cake’s sweetness.

Gel food coloring (optional) – For colorful accents or a pastel swirl effect.

• For the Decorations:

White fondant – Use it to craft unicorn ears and the iconic horn.

Edible gold paint or gold dust – Adds a shimmering finish to the horn and accents.

Sprinkles, edible glitter, or candy pearls – Perfect for creating a magical look.

Piping bags with star tips – For creating swirls, rosettes, or other frosting designs.