In a large skillet over medium heat, add the ground beef, diced onion, and green bell pepper. Cook until the beef is browned and the vegetables are tender, about 5-7 minutes. Drain excess fat.

Stir in the minced garlic and cook for an additional minute until fragrant. Then, add the ketchup, Worcestershire sauce, mustard, and drained diced tomatoes. Season with salt and pepper. Simmer for about 5 minutes, allowing the flavors to meld.

Preheat your oven to 375°F (190°C).

Unroll the crescent roll dough and press it into the bottom of a greased 9x13 inch baking dish, ensuring it covers the bottom completely.

Spoon the sloppy joe mixture evenly over the crescent roll dough.

Sprinkle the shredded cheddar cheese over the sloppy joe mixture.

Place the casserole in the preheated oven and bake for 20-25 minutes, or until the crescent roll dough is golden brown and the cheese is melted and bubbly.

Remove from the oven, let it cool slightly, and garnish with chopped fresh parsley before serving.