Prepare all of the ingredients. Preheat oven to 450. Start water boiling for Pasta. Preheat Grill or Grill Pan to Medium-High.
In a frying pan over medium-high heat, add bacon strips and cook until crispy. Remove to paper towel covered plate and set aside until ready to build burger.
In a bowl combine the ingredients for the burgers. Form into 4-in patties. Once grill or grill pan is heated, cook patties for 7-8 minutes on each side.
Add pasta to boiling water and cook as directed on package. Drain in colander and rinse with cool water to arrest cooking process. Return to pot (away from heat).
Lay open buns on a baking sheet and place in oven for 10 minutes to toast.
In a sauce pan over medium heat, add butter and garlic powder. Once melted whisk in flour and cook for 3 minutes. Whisk in chicken broth and cook for 3 minutes. Whisk in heavy cream and cook for 3 minutes. Add in cheese, a handful at a time, until fully melted. Let cook another 2 minutes then pour over cooked pasta and stir to coat well.
Build the Burger: Start with a toasted bottom bun and place a piece of lettuce, one tomato and some red onions. Then top with a burger, followed by a helping of mac & cheese and then 3 pieces of bacon and top with toasted top bun.