Take the butter, sour cream, sugar and salt and put into a sauce pan. Heat until the butter has all melted.
¼ Cup Unsalted Butter, 16 Ounces Sour Cream, ⅓ Cup Granulated Sugar, 1 teaspoon Salt
In a large bowl take the yeast, warm water and sugar - mix and let stand for 5 minutes.
2 Ounces Active Dry Yeast, ½ Cup Warm Water
Mix the sour cream mixture into the yeast mixture and add the 2 eggs and 2 cups of the flour. Mix well for 2 minutes on medium speed.
2 Each Large Eggs, 6-½ Cups All Purpose Flour
Stir in the remaining flour, stir until combined.
Empty out onto a clean, floured surface. Knead the dough for 10 minutes until it becomes soft and elasticy.
Put this dough into a large greased mixing bowl, then turn the dough over (now the top has been greased. Cover lightly with plastic wrap and allow to rise for 1 hour in a draft-free warm area.
While the dough is rising make the filling. In a medium sized mixing bowl take all the cream cheese filling ingredients and mix together on medium setting for 1 minute.
2 (8 Ounce) Blocks Cream Cheese, 1 Each Large Egg, ¾ Cup Granulated Sugar, 2 teaspoons Vanilla Extract
Same with the pecan praline filling, except leave out the pecans until the ingredients have been mixed, then stir in the pecans.
2 (8 Ounce) Blocks Cream Cheese, ½ Cup Granulated Sugar, ¼ Cup Dark Brown Sugar, 2 teaspoons Cinnamon, 2 teaspoons Vanilla Extract, 1 Each Large Egg, 1 Cup Finely Chopped Candied Pecans
Once the dough has doubled in size divide in half. Take one half and roll out onto a floured surface - making a 28X10 inch rectangle (ish).
Using the back of a spoon carefully spread the filling on top of the king cake dough. Be careful not to tear the dough.
Starting at the long end start to roll the dough into a log shape. Try to keep it even.
Transfer the 'log' onto a baking sheet (with parchment paper) and shape into a circle/oval. Press the ends of the log into each other and press the seams closed as best you can. It doesn't have to be perfect because the icing afterward can cover imperfections pretty well.
Preheat the oven to 375°F.
Cover the dough with a dry towel and allow to rest again for 20 minutes.
Remove the towel and put into the oven for 20 minutes.
Remove from the oven and allow to cool.
If you are inserting a plastic king cake baby into your king cake now is the time to do it. Just press the baby into the cake in an inconspicuous place.
Take the vanilla glaze ingredients and mix together well. Spoon onto the king cake starting at the place you just inserted the baby. Work quickly because the glaze dries quickly and you still need to sprinkle the sanding sugar while it's wet.
3 Cups Powdered Sugar, 4 Tablespoons Unsalted Butter, 2 teaspoons Vanilla Extract, 4 Tablespoons Whole Milk
Sprinkle the sanding sugar all over the icing, liberally. Traditional Mardi Gras colors are purple green and yellow, but this is your choice!
¼ Cup Purple Sanding Sugar, ¼ Cup Yellow Sanding Sugar, ¼ Cup Green Sanding Sugar
Slice and enjoy!