Over medium heat, in a medium saucepan, sautè the garlic in extra virgin olive oil until golden and fragrant. Add the turkey and cook until it changes color.
Pour the marinara sauce then cook for about 10 minutes. Season with the oregano, salt, and pepper.
While making the sauce, slice the zucchini in half vertically then scoop out the middle pulp. Leave about 1/2 centimeter of pulp close to the skin. Reserve the scooped-out pulp for other recipes.
On a baking sheet lined with baking paper, place the zucchini with the hollow part facing up. Spoon the sauce in each zucchini.
Bake them in the oven for about 15 minutes.
Take them out of the oven then quickly sprinkle the mozzarella on top of the zucchini.
Put them back in the oven and bake for another 3 minutes or until the mozzarella has completely melted.
Drizzle with extra virgin olive oil before serving.