baked macaroni & cheese w/bacon panko bread crumbs

Ingredients

• 1 pound elbow macaroni, cooked el dente
• 1 package velveeta cheese/8 ounce
• 2 cans campell's cream of cheddar soup
• 2 sticks butter, unsalted
• 1 package cheddar cheese, shredded 12 ounces
• 1 package panko bread crumbs
• 4 ounces parmigiano-reggiano, grated
• 1/4 pound bacon, cooked crispy and chopped fine
• 1 large shallots minced
• 2 tablespoons all purpose flour
• 1 teaspoon black pepper,cracked
• 1 quart half and half