Frittata with Onion, Tomato and Basil

Description
Lunch, brunch, or light dinner this is simple and delicious!
Ingredients
1 large or 2 small onions (about 2 cups)
3 tablespoons olive oil (divided)
1 cup fresh chopped or canned diced tomatoes*, drained
1/2 cup chopped fresh basil
6 large eggs
1/4 cup grated Romano or Parmesan cheese
Directions
Cut onions into halves, place flat sides down and cut each half into narrow wedges. Heat 1 tablespoon oil in 9 or 10-inch skillet or sauté pan. Add onion and sauté 8 to 10 minutes until golden. Remove about one-third of the onion from pan and keep warm. Add drained tomatoes and all but about 1 tablespoon basil to pan and cook with onions 1 minute to heat. Beat eggs in bowl with fork. Add onion-tomato-basil mixture to eggs, stirring just to combine. Heat remaining 2 tablespoons oil in skillet. Pour egg mixture into hot skillet. Cover and cook over low heat until set, about 15 minutes. Top with reserved onions and basil; sprinkle with cheese. Let rest 2 or 3 minutes, then cut into wedges to serve.
Makes 4 servings.
Special notes
Recipe and image provided by the National Onion Association
Per serving: 249.23 cal, 12.3 g pro, 6.59 g carb, 19.42 g fat, 69.81% cal from fat, 323.75 mg chol, 183.89 mg sod,1.27 g fiber, 317.1 RE Vit A, 9.07 mg Vit C, 127.26mg calcium, 1.85 mg iron.