Heat a skillet over medium high heat. Add 1 tbs of the olive oil, add onions, and cook 5 minutes. Add the tomato paste, sugar, water, garlic, olive oil, salt & pepper, and stir. Cook 3 minutes to combine, then place the mixture on the bottom of your baking dish. Top With the zucchini slices, followed by the shredded cheese.
Cover and bake for 25 minutes in the 375 degree oven, uncover and brown under the broiler for 3-5 minutes, watch it closely. Enjoy!