In a large saute pan over medium-high heat, add bacon. Cook until crispy and remove to paper towel covered plate. Do not discard grease.
Add onions and garlic to bacon grease. Saute for 3 minutes then add ground beef, Worcestershire sauce, Italian seasoning, and paprika. Cook and crumble until no longer pink.
Place half of the potato slices evenly across the bottom of the 13x9 baking dish. Sprinkle with one cup of cheese. Use a slotted spoon to transfer beef mixture to baking dish. Top with remaining potatoes. Pour heavy cream over top. Sprinkle with remaining cheese and bacon. Back in oven for 45 minutes.
Remove from oven and sprinkle with scallions. Let rest for at least 5 minutes before serving.