Baked Mac and Cheese with Bacon - VeryVera

Ingredients

• 1 lb large elbow macaroni, uncooked
• 1 tbsp. plus 1 ½ teaspoon kosher salt, divided
• 3/4 c fresh breadcrumbs
• 2 oz Parmesan cheese, shredded or grated (about ½ cup)
• 12 thick cut bacon slices, cooked and crumbled, divided
• 1/3 c all-purpose flour
• 1 tsp. black pepper
• 1 tsp. dry mustard
• 3 c whole milk
• 1 c whole buttermilk
• 1/3 c unsalted butter, plus more for greasing dish
• 12 oz extra-sharp Cheddar cheese, shredded (about 3 cups)
• 4 oz Monterey Jack, provolone, or mozzarella cheese, shredded (about 1 cup)
• 2 large eggs, well beaten