Ingredients:
2 teaspoons olive or vegetable oil
8 oz fresh green beans, cut into 1 1/2-inch pieces
1/2 medium yellow bell pepper, cut into 1/2-inch pieces (1/2 cup)
3 plum (Roma) tomatoes, cut into 1/2-inch pieces (1 cup)
1/2 teaspoon salt
16 oz frozen cheese-filled ravioli (from 24-oz bag)
1/2 cup sour cream
3 tablespoons basil pesto
2 teaspoons grated lemon peel