mac and cheeseburger casserole

Ingredients For mac and cheeseburger casserole

• 6

  hamburger buns
• 1/2 stick

  butter
• 1 lb

  ground beef
• 1/2 lb

  ground pork
• 1

  beef bouillon, cubes
• 3 Tbsp

  worcestershire sauce
• 1 Tbsp

  ketchup more for drizzling
• 1 tsp

  prepared mustard
• 1 tsp

  each salt, garlic powder, mccormicks grill mates steakhouse onion burger seasoning
• 1 box

  mac and cheese prepared as directed
• 2 c

  shredded sharp cheddar cheese divided
• 1 md

  onion sliced
• 12

  dill pickles stackers