well it's not really rattailstewie, it's ratatouile, or my version of it at least.
1/2 a yellow pepper diced
1/2 a green pepper diced
1 small zucchini diced
1/2 a small eggplant diced
white button mushroom chopped up- usually in quarters is fine
1 carton of chopped tomatoes
not pictured is my onion, 1 small onion chopped
seasonings- i don't really measure these, i just add what looks right so to help you out i'll say 1 tablespoon dried parsley, 1/2 teaspoon onion powder, 1/2 teaspoon garlic powder, 1 teaspoon basil, 1 teaspoon oregano. tiny bit of chili powder, 1 bay leaf. i also do a squirt of garlic paste from the tube and a huge squirt of tomato paste
once you get the veggie chopped up i toss them in my sauce pot with a splash of olive oil and the garlic paste on medium high. i stir them around until the mushrooms and onions are looking soft. i add the dried seasonings, except the bay leaf. i give everything a stir. when things are starting to stick to the bottom of the pan i add my chopped tomatoes. i then add about a can of water. i turn down the heat to low. i add the bay leaf and tomato paste. i let everything simmer for at least an hour. it may seem at first that you didn't add enough water but the zucchini and rest of the veg release a lot when it cooks. it's done when everything is tender. i don't add salt or ground pepper to my dishes normally when i cook them because a lot of this stuff i feed my toddler. i add that when it's on my plate.
now for the sausages you cook them how you like separately and add to the veggie when the dish is complete, or if you're not vegetarian like me you can add them to the pot and cook them before adding the veggie. also good with chicken or fish. i blend some of the veggie up in a bowl and add cooked meat for my son. serve over rice or pasta. since i was feeling lazy last night i ate mine over a small plate of french fries with some grated cheese- totally delicious. i usually just eat it with a hunk of garlic bread- dipping the bread in as a spoon