Sauteed Green Beans with Garlic

By BrittBritt

4.25 / 5

10min

10min

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2 tablespoons olive oil
1 small red onion chopped
2 cloves garlic chopped
1 tablespoon red wine vinegar
1 pound fresh green beans trimmed
1 tablespoon butter
1 teaspoon red pepper flakes
salt and ground black pepper to taste