How to cook
Preheat the oven to 374°F (190 degrees) and grease the baking pan with olive oil. Cut the zucchini into thin slices and place half of them the baking pan. Add the chopped onion.
Pour half of the tomato paste and sprinkle it with thyme, season with salt, black pepper and if desired, you can add a little garlic.
Add the remaining zucchini, pour the remaining tomato paste, sprinkle with more salt and black pepper, cover the baking pan with foil and bake for 40-45 minutes. Serve immediately.