Preheat oven to 375 degrees
Heat olive oil in a large skillet over medium-high heat. Add onions and sauté until golden (about 5-7 minutes), then add garlic and sauté a few minutes longer (be sure not to burn).
Transfer onion mixture to plate. Brown meat in same pan and season with S&P.
Reduce heat to medium-low, add tomatoes, onion mixture, black beans, seasonings and season with S&Cook until heated through.
Add mixture to each zucchini half (press fillings to fit). Cover baking dish with foil and bake about 15-20 minutes. Remove foil and add cheese evenly on top of each boat. Return to oven and bake until cheese has melted.
Enjoy!
xoxo-cherise