Mardi Gras King Cake Recipe

Ingredients

• 1 (16-ounce) container sour cream
• 1/3 cup granulated sugar
• 1/4 cup butter
• 2 (1/4-ounce) envelopes active dry yeast
• 1/2 cup warm water
• 1 tablespoon granulated sugar
• 2 eggs
• 6 cups bread flour
• 2/3 cup butter, softened (for filling)
• 1 cup granulated sugar (for filling)
• 3 teaspoons ground cinnamon (for filling)
• 3 cups powdered sugar
• 3 tablespoons butter, melted
• 1/4 teaspoon pure vanilla extract
• 2 tablespoons milk
• Purple, green, and gold (yellow) tinted sparkling sanding sprinkles