Radishes with Pasta and Radish Greens - Urban Harvest Organic Delivery

Ingredients

• 12 Radishes, sliced (about 1 cups) with green tops
• 1 Tbs Olive oil
• ½ medium Onion, chopped
• 6-oz package short pasta such as penne or shells, cooked
• ¼ C cooking water reserved from pasta
• ¼ C freshly grated Parmesan or Romano cheese (optional)
• Salt and pepper