Preheat oven to 425°. In a large skillet, cook beef with green pepper, onion and garlic over medium-high heat until meat is no longer pink, 5-7 minutes; crumble beef; drain. Stir in wine and bring to a boil; cook until wine is reduced by half, about 2 minutes. Stir in tomatoes, tomato paste, salt and pepper; return to a boil. Reduce heat; simmer, uncovered, until mixture is thickened, 2-3 minutes, stirring occasionally., Meanwhile, place Texas toast on a foil-lined 15x10x1-in. pan; bake until lightly browned, 8-10 minutes., Spoon beef mixture onto toast; top with cheese. Bake until cheese is melted, 3-4 minutes. Serve immediately.