Bourbon Sweet Potato Casserole with Sweet ‘n’ Savory Bacon Pecans

Name: Bourbon Sweet Potato Casserole with Sweet ‘n’ Savory Bacon Pecans
Prep time: 20 min
Cook time: 1 h 30 min
Total time: 1 h 50 min
Cuisine: American
Ingredients: 4 medium sweet potatoes; 3/4 cup brown sugar; 2 teaspoons vanilla extract; 1 teaspoon cinnamon; 1/4 cup whole milk; 4 tablespoons salted butter, (melted); 2 large eggs, (beaten); 2 tablespoons bourbon ((optional)); kosher salt; 4 slices thick-cut bacon, (chopped); 3/4 cup brown sugar; 1/3 cup all-purpose flour; 1 1/2 cups raw pecans (roughly chopped); 6 tablespoons salted butter (melted); 1/2-1 teaspoon cayenne pepper (using more or less to taste); 2 tablespoons fresh chopped sage; 1-2 teaspoons fresh chopped rosemary ((optional))