greek green beans in tomato sauce (fasolakia)

Ingredients

• 1 tablespoon olive oil, extra virgin
• 1 medium onion, diced
• 2 cloves garlic, chopped
• 1 pinch red pepper flakes
• 28 ounces can tomatoes, diced or 4 cups diced fresh tomatoes
• 1 pound green beans, trimmed and cut into bite size pieces
• 1/2 teaspoon oregano, dried
• - kosher salt and freshly ground pepper to taste
• 1 - handful parsley, chopped
• 1 - handful dill or fresh mint, chopped
• 1/2 cup feta cheese, crumbled