Mini Eggs Surprise Cake

Ingredients

• 1 cup unsalted butter (room temperature)
• 2 cups sugar
• 2 tsp vanilla extract
• 6 large eggs
• 3 cups all-purpose flour
• 1 tsp baking soda
• 1 tsp salt
• 1 1/2 cups sour cream
• pink (blue, yellow and green food colouring)
• 2 cups unsalted butter (room temperature)
• 1 tsp vanilla extract
• 5 cups confectioner’s sugar
• 1 cup mini eggs (for filling)
• 3 cups mini eggs (for decorating)