Forget those prepared diet meals. This low-calorie one-dish recipe includes beef cubes, green beans, carrots, and specially seasoned roasted potatoes.
Heat oven to 400°F. Coat a baking sheet with nonstick cooking spray; set aside. Whisk broth, ketchup, mustard and cornstarch; set aside. Cut potatoes into 1/2-inch wedges; place on prepared baking sheet and sprinkle with 1/4 teaspoon of the garlic salt and 1/8 teaspoon of the black pepper. Bake at 400°F for 20 minutes or until tender. Remove from oven and set aside.
Trim beans and cut into 2-inch pieces; cut carrots in quarters lengthwise. Place in a large skillet; add onions and 1/4 cup water. Cover; cook on medium-high heat for 5 minutes. Remove lid and cook until water is gone. Remove vegetables and keep warm.
Add oil to skillet and heat over medium-high heat. Sprinkle sirloin with remaining 1/4 teaspoon garlic salt and 1/8 teaspoon black pepper and add to skillet. Cook for 3 to 4 minutes. Pour broth mixture into skillet; boil for 1 minute or until thickened. Stir in vegetables. Add potatoes to skillet and gently toss to coat.