Spiced Apple Upside Down Cake

Name: Spiced Apple Upside Down Cake
Prep time: 15 min
Cook time: 28 min
Yield: 12
Ingredients: 1 cup (2 sticks) (227g) butter divided; 1/2 cup (125 ml) firmly packed brown sugar; 4 tsps (20 ml) pure vanilla extract (club house) divided; 3 tsps (15 ml) apple pie spice (club house) divided; 2 apples such as Gala or Jonagold, peeled and thinly sliced; 1 package 2-layer size yellow cake mix; 4 eggs; 1 container (8 ounces/250g) sour cream