Make the garlic butter: In a small bowl, mix together melted butter, garlic, and parsley. Set aside.
Prepare the sauce: In another bowl, combine tomato sauce, ketchup, and Italian seasoning.
Preheat the oven: Preheat to 350°F (175°C) and line a baking tray with parchment paper.
Shape the rolls: Place the thawed rolls on the tray. Gently press down the center of each roll to create a well, leaving a slight border around the edges for that “deep dish” crust.
Assemble: Brush each roll with garlic butter, then spoon in the tomato base. Top with cheese, sausage, and red onion.
Bake: Bake for 18–20 minutes, or until golden, bubbly, and slightly crispy on the edges.
