Beef mince and zucchini bake

Ingredients (serve 4): 1 tablespoon olive oil 2 medium brown onions, finely chopped 3 garlic cloves, crushed 600g lean beef mince 1 cup pasta sauce of choice 2 tablespoons chopped fresh oregano leaves 2 medium zucchini (baby marrow), cut into ribbons 1 cup plain Greek-style yoghurt 1/3 cup finely grated parmesan cheese Fresh oregano and…