Preheat oven to 350 degrees Fahrenheit (175 degrees Celsius).

Place all ingredients in a baking dish. Cover tightly and bake for one hour. Set aside.

Place the onion in a food processor fitted with S-blade. Process for about two minutes, until completely pureed. Add it to a mixing bowl.

Switch from the S-blade to the grater blade and process the zucchinis.

Wrap the grated zucchini in a kitchen towel and squeeze out as much liquid as you can. Add it to the onion in the mixing bowl; add the remaining ingredients.

Heat a thin layer of oil in a frying pan over medium heat. Drop about two

tablespoons batter into the pan and flatten slightly. Fry for two to three minutes per side, until golden brown.

Combine the avocado and lime or lemon juice in a bowl. Mash; add salt and pepper to taste.

Place fritters on a platter. Top with avocado, then spoon tomato and shallot confit over each one. Garnish with salt, pepper, and chopped parsley.