Mardi Gras King Cake

Name: Mardi Gras King Cake
Prep time: 1 h 30 min
Cook time: 20 min
Total time: 1 h 50 min
Cuisine: European, Mediterranean
Ingredients: 3 1/2 cups all purpose flour; 1 package (2 1/4 teaspoons Quick Rise yeast); 1 cup warm milk (120º to 130º); 1/4 cup sugar; 1 teaspoon salt; 2 eggs; 6 tablespoons unsalted butter (softened, cut into 12 pieces); 2/3 cup packed light brown sugar; 1 1/2 teaspoons ground cinnamon; 4 tablespoons unsalted butter (softened); 1 cup powdered (confectioners sugar); 1 tablespoon milk; 1/2 teaspoon vanilla; dark green (purple, and yellow or gold sugars); miniature plastic baby