Rough chop the cipolline onions and remove feta cheese from packaging.
In an oven dish, combine chopped onions and grape tomatoes then place the feta in the center of the dish and drizzle all with 4 tbsp. of olive oil
Top with salt and pepper to taste
Bake on center rack of the oven for 30 minutes or until the tomatoes split open from the heat
Remove dish from the oven and mix well. Be careful as tomatoes could splatter
Meanwhile, in a hot pan, add 1 tbsp. of olive oil. Once heated add the spinach until its wilted then toss in the zucchini spirals and sauté for approximately 1-2 minutes more.
Add zucchini spirals and spinach to the cheese and tomato mixture and mix all together until zucchini is coated.