Boil macaroni according to package directions until almost al dente. Meanwhile, slice the onions into about 1/4 inch thick slices.
Drain macaroni and rinse under hot water.
Spread a layer of macaroni about 1/2 inch deep in the bottom of a large, deep casserole dish with a lid. I've found that glass, stoneware or Corningware works best.
Lay cheese slices evenly on top of macaroni, tearing slices to fill in holes as necessary. If you like this really cheesy, repeat this layer.
Spread onion slices one layer thick over cheese.
Slice tomatoes in half lengthwise and place cut side down onto onion layer.
Sprinkle salt and pepper sparingly on tomatoes.
Place small, thin pats of butter or margarine on tomatoes. I don't have an exact amount because I just eyeball it.
Repeat all layers beginning with the macaroni.
When your casserole dish is almost full or you are out of ingredients pour about 1/3 to 1/2 cup (depending on how much liquid you want in the end) of the juice from the tomato cans evenly over casserole.
Cover casserole dish and put in the oven pre-heated to 350 degrees.
Bake 2 hours, or until onions look done and cheese is melted (here's where the transparent casserole dish comes in handy!).
Remove from oven, let stand about 5 minutes and enjoy!
NOTE: This casserole has a bad habit of bubbling over in the oven. To contain the mess I either put the dish on an old aluminum foil lined cookie sheet, or I put the foil lined cookie sheet under the casserole dish on the rack below it.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	387.14 Kcal (1621 kJ)
Calories from fat	93.54 Kcal
		% Daily Value*
Total Fat	10.39g	16%
Cholesterol	24.18mg	8%
Sodium	70.45mg	3%
Potassium	277.65mg	6%
Total Carbs	62.14g	21%
Sugars	4.94g	20%
Dietary Fiber	3.42g	14%
Protein	11.39g	23%
Vitamin C	4.7mg	8%
Vitamin A	0.1mg	5%
Iron	2.3mg	13%
Calcium	59.4mg	6%

Amount Per 100 g
Calories	259.54 Kcal (1087 kJ)
Calories from fat	62.71 Kcal
		% Daily Value*
Total Fat	6.97g	16%
Cholesterol	16.21mg	8%
Sodium	47.23mg	3%
Potassium	186.13mg	6%
Total Carbs	41.66g	21%
Sugars	3.31g	20%
Dietary Fiber	2.3g	14%
Protein	7.63g	23%
Vitamin C	3.1mg	8%
Vitamin A	0.1mg	5%
Iron	1.6mg	13%
Calcium	39.8mg	6%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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