Preheat your oven to 375°F (190°C) and prepare a baking sheet lined with parchment paper.

Slice the French bread lengthwise to create two halves, cut side up on the baking sheet.

In a small mixing bowl, combine softened butter, minced garlic, and one tablespoon of chopped parsley; spread evenly on the bread.

In a skillet, brown ground beef over medium heat, breaking apart until fully cooked, about 5-7 minutes.

Add diced onion and green bell pepper to the beef; sauté for 3-4 minutes until tender, adding minced garlic last minute.

Mix in tomato sauce, ketchup, Worcestershire sauce, smoked paprika, chili powder, salt, and pepper; simmer on low for 5-6 minutes until thick.

Spoon the Sloppy Joe mixture over the buttered halves of bread and sprinkle with mozzarella and Parmesan cheese.

Bake in the preheated oven for 12-15 minutes until cheese is melted and bubbly.

Switch to broil and cook for an additional 2 minutes for a golden-brown finish; watch closely to prevent burning.

Remove from oven, sprinkle with remaining parsley, allow to cool slightly, slice, and serve warm.