Thinly slice the zucchini and onions. Make one layer of zucchini to cover the bottom. Then take half of the sliced onion and place on top of the zucchini. Then repeat for one more layer.
Brown the ground beef and season to your liking with Borsari Original Seasoning. Add the tomato sauce and stir. Then add your chopped tomato to the goo. Stir away and let simmer for a few minutes. Grab your spoon and take a taste. It may need some more seasoning. Feel free to add a few more shakes of Borsari Original if needed.
Pour the tomato meat sauce over your zucchini. Cover the pan with a lid or foil and bake in the oven for one hour. Once the oven beeps, remove the pan from the oven and add the shredded mozzarella over the top of your goo. Cover once more for and place back in the oven for 20 minutes.
Note: Zucchini comes in all shapes and sizes. I used two and they were pretty hefty ones. You need to eyeball the zucchini and choose two that will make two layers in your pan.You know the casserole is done when your zucchini becomes a bit translucent. It’s like watching for the pot to boil. I always feel like it should be ready earlier but you must be patient to enjoy.