Have you tried making sauces with yellow tomatoes instead? I believe they are lower in acid than traditional red tomatoes - plus the bright yellow color looks really nice with other ingredients such as sauteed greens thrown in, or some herbs.
I would also perhaps consider getting a good electric food steamer, possibly one with separate compartments that cook independently, because there are many dishes you can steam rather than cook with traditional methods, and it will save you a lot of fat and calories - not to mention steaming is one of the healthiest ways of cooking because it doesn't produce carcinogens like grilling can, and it preserves most of the nutrients as opposed to boiling, which leeches a lot out.
I would even steam Italian Turkey Sausage links in mine and sometimes serve them with some steamed greens and potatoes lightly dressed with olive oil. But you could even steam very delicate fish that would otherwise fall apart if you tried to fry it, or stick to the pan if you tried to broil it. You can even place a small bowl in the unit with some butter/wine/herbs to melt as the food cooks, then pour it over it when serving. I've even steamed diced tomatoes with rice in it, then tossed some parmesan in at the end when they were done cooking.