Add the ground beef to the skillet with the onions and garlic. Cook, breaking up the meat, until browned and cooked through. Drain excess fat if necessary.
In a medium bowl, whisk together the heavy cream, mayonnaise, salt, pepper, and smoked paprika until smooth.
Stir in 1 cup of the shredded cheddar cheese into the ground beef mixture until melted and combined. Remove from heat.
Transfer the beef mixture into a greased 9×13-inch baking dish. Pour the cream mixture evenly over the top.
Sprinkle the crumbled bacon over the top, followed by the remaining cup of shredded cheddar cheese.
Bake in the preheated oven for 20-25 minutes, or until the cheese is melted and bubbly.
Remove from oven and let it sit for a few minutes before serving. If desired, top with chopped lettuce and diced tomatoes.