Heat oven to 375 degrees. Spray 4 quart baking dish with non-stick cooking spray

In a large skillet, heat oil Iverson medium heat. Cook the onion in the oil until soft. Add the ground beef and cook 5 to 7 minutes stirring occasionally until thoroughly.

Add mixed vegetables, tomato paste, salt and pepper. Cook over medium heat for 5 minutes stirring frequently until vegetables are hot.

In a small bowl mix broth and flour with a whisk. Add mixture to beef and heat to a boil. Boil 3 minutes stirring frequently until thick.

Spoon beef mixture into the baking dish, and spread mashed potatoes over the top of the beef mix.

Bake 20 minutes or until potatoes are golden brown.