Butterscotch Sticky Buns

Name: Butterscotch Sticky Buns
Ingredients: 3/4 c. whole milk; 1 tbsp. plus 1/2 teaspoon active dry yeast; 1/2 c. granulated sugar; 1 stick unsalted butter; 2 large eggs; 4 c. all-purpose flour; 1 tsp. kosher salt; 1 c. light brown sugar; 2 tsp. cinnamon; 1 c. Pecan halves; 1/2 c. packed dark brown sugar; 6 tbsp. unsalted butter; 3 tbsp. Scotch whiskey; 2 1/2 tbsp. sweetened condensed milk; 2 tbsp. water; 2 tbsp. Crème fraîche; 1 1/2 tsp. corn syrup; 1/4 tsp. salt; tsp. pure vanilla extract; tsp. baking powder