from An Oregon Cottage
1 pound green beans trimmed and cut
2 tablespoons butter divided**
1 onion chopped
1 tablespoons balsamic vinegar
½ cup of more chopped fresh tomatoes
1/2 teaspoon salt or to taste
1/2 teaspoon black pepper
1/8 teaspoon dried red chili peppers or to taste
Steam green beans in a large pot lined with a steamer basket and filled with water to the bottom of the basket, cook just until crisp-tender, about 5min.
Meanwhile, melt 1 tablespoon butter in a skillet over medium-low heat. Add chopped onions and cook, stirring occasionally, until caramelized, 5-8 minutes. Add garlic variation here if using.
Add balsamic vinegar and cook a minute before adding the tomatoes, salt, pepper, and dried chili peppers and any optional herbs. Cook another 1-3 minutes, and then remove from heat.
Drain the beans when they are done and toss with the remaining butter and more salt and pepper as you'd like.