Simple Tomato Soup

By Barbara

4.81 / 5

10min

20min

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1 tablespoon unsalted butter or margarine
1 tablespoon olive oil
1 onion thinly sliced
2 large cloves garlic peeled and crushed
2 (28 ounce) cans whole peeled tomatoes
1 cup water
1 tablespoon sugar
1 teaspoon salt plus more to taste
freshly ground black pepper to taste
1 pinch red pepper flakes
¼ teaspoon celery seed
¼ teaspoon dried oregano