Step 1 - Place your potatoes in a large pot of water and bring to a boil. Add in your peeled potatoes. Cover, reduce heat to low, and continue simmering for about 20 minutes or until the potatoes are fork-tender.
Step 2 - Drain potatoes and place them back in the pot along with the garlic, Greek yogurt, chicken broth, milk, and butter, and mash it all together until smooth. Season to taste with salt and pepper.
Step 3 - Meanwhile, in a large skillet, add onion and ground turkey and cook until meat browns. Drain in a colander and return to pan.
Step 4 - Add salt, pepper, garlic powder, green beans, soup and Worcestershire sauce. Mix well to combine.
Step 5 - Spoon skinny mashed potatoes on top of ground turkey mixture and spread evenly.
Step 6 - Lay pieces of cheese on top of skinny potatoes. Bake, uncovered, in a 350° oven for 30 to 35 min. or until the cheese is bubbly and begins to brown on the edges. Serve with your favorite toppings.