Mince the 2 cloves of garlic (or use equivalent of jarred garlic)
Slice the onion
Blanch the beans and tomatoes
Bring a large pot of water to a boil on medium high heat. Put the trimmed beans into the pot to parboil/blanch. After 3 minutes add the cored tomatoes to the boiling water. Leave the tomatoes in until the skins start peeling off then remove the beans and the tomatoes from the water and put them in a bowl to cool.
When tomatoes are cool peel the skin off the tomatoes, remove the seeds and crush them by hand. Save all the juice.
Sauté
Use a 10 or 12 inch skillet on medium high heat. Add enough olive oil to cover the bottom the skillet.
Add the onion and garlic to the oil and sauté until they are lightly browned.,
Add the crushed tomato and salt to the skillet and stir. Let the tomato cook in the skillet for about 5 minutes.
Add the string beans and saute until the beans are cooked to your liking.
Keyword 30 minutes or less, 5 ingredients or less, all vegetable saute, blanching vegetables and fruit, cooking with fresh tomatoes, low carb meal, meatless meal, side dish, side dishes for the oven, string beans