1Dice 3 medium russet potatoes into bite-sized cubes.
2Add potatoes to an air fryer with cooking spray, salt, pepper, garlic powder, and parmesan cheese.
3Air fry at 375 for 20 minutes.
4Season diced sirloin steak with salt, pepper, and garlic powder.
5Sear steak in a pan on medium-high heat to your preferred level of doneness.
6In the same pan, sauté thinly sliced onions with olive oil and a dash of balsamic vinegar or Worcestershire sauce.
7Blend together nonfat Greek yogurt, low-fat cottage cheese, lemon juice, fresh parsley, chives, garlic powder, and salt until smooth to make creamy herb sauce.
8Divide the potatoes, steak, and onions into bowls.
9Drizzle herb sauce over the mixture, and garnish with fresh parsley.