Heat oven to 350°F. Spray 11x7-inch glass baking dish with cooking spray. In 2-quart saucepan, place parsnips and potatoes; cover with water. Heat to boiling over medium-high heat. Reduce heat; simmer uncovered 15 to 20 minutes or until tender; drain. In 12-inch skillet, cook beef over medium-high heat 5 to 7 minutes, stirring occasionally, until thoroughly cooked; drain. Add flour; cook 1 minute, stirring constantly. Add broth; heat to boiling. Cook 1 to 2 minutes, stirring constantly, until slightly thickened. Stir in peas and onions, tomato paste, 1/2 teaspoon of the salt and 1/4 teaspoon of the pepper. Cook 2 minutes. Spoon into baking dish.