Preheat oven to 350°. In a large skillet, cook beef, onion and garlic over medium until beef is no longer pink and onion is tender, 10-12 minutes, breaking up beef into crumbles; drain., Transfer to a greased 13x9-in. baking dish. Sprinkle with bacon and 1 cup cheddar cheese. In a large bowl, whisk together eggs, tomato paste, heavy cream, tomato paste, Worcestershire sauce, salt, and pepper until well combined. Pour over beef mixture. Sprinkle with remaining 2 cups cheddar cheese., Bake, uncovered, until set and golden brown, 30-35 minutes. Let stand 10 minutes before serving. Garnish with toppings as desired.