1 pound lean beef round steak
1/2 teaspoon salt
1/2 teaspoon black pepper
2 teaspoons dried oregano
non stick cooking spray
1 14-ounce can no salt added diced tomatoes
3 tablespoons tomato paste
1 teaspoon Worcestershire sauce
1 red pepper, cut into strips
1 yellow pepper, cut into strips
1 small zucchini, cut into cubes
1 onion, diced
1 clove garlic, minced