Mandy's Crab Stuffed Zucchini

INGREDIENTS

• 4 zucchini, ends trimmed
• 1 tablespoon butter
• 1/2 onion, finely chopped
• 1 clove garlic, finely chopped
• 1/2 green bell pepper, finely chopped
• 1 pound crabmeat
• 1 teaspoon ground paprika
• salt and ground black pepper to taste
• 1 cup Italian seasoned bread crumbs
• 1/4 cup mayonnaise, or as needed
• 1/4 cup dry white wine
• 3 tablespoons butter, melted
• 1/2 cup shredded Parmesan cheese, divided