Turtle Chocolate Layer Cake for new year

1 and ½ tablespoon pure vanilla extract

1 and ½ tablespoon instant coffee granules

2 and ¼ cups buttermilk, room temperature

SALTED CARAMEL BUTTERCREAM:

3 cups Unsalted Butter, softened to room temperature

12 cups Powdered Sugar, sifted

¾ cup Salted Caramel Sauce, cooled completely(recipe above)

3-6 tablespoon heavy cream or milk, as needed

GANACHE DRIP:

1 cup dark chocolate chips

½ cup heavy whipping cream

ADDITIONAL GARNISH:

2 cups chopped pecans

Whole pecans