Garlicky White Beans with Spinach and Red Onion

1. This recipe serves: 4
2. Preparation time: 10 minutes
3. Cooking time: 20 minutes
4. 2 tablespoon olive oil
5. 1 red onion, peeled, halved and sliced
6. 2 cloves garlic, minced
7. 2 bunches spinach (about 1 pound), washed
8. 2 15-ounce cans white beans, rinsed and drained
9. 2 tablespoon s balsamic vinegar
10. salt to taste
11. freshly ground black pepper

Heat the olive oil in a large skillet over medium heat. Add the red onion, season lightly with salt and pepper and cook for 2 minutes. Add the garlic and continue cooking until the onion softens, about 5 minutes. Turn up the heat and cook until the onion turns light brown on the edges. Lower the heat to medium, add the white beans and cook until the beans are thoroughly heated. Add the spinach and balsamic vinegar. Continue cooking until the spinach is just wilted. Adjust the seasonings and serve.