Steps to Prepare Simple Shepherd's Pie:

• Start by peeling the Idaho potatoes and cutting them into even chunks. Place them in a large pot and cover with cold water. Add a pinch of salt and bring to a boil over medium-high heat. Once boiling, reduce the heat to a simmer and cook until the potatoes are fork-tender, about 15-20 minutes.
• Once the potatoes are cooked, drain them well and return them to the pot. Add the butter, cream cheese, and a splash of milk. Mash until smooth and creamy, adjusting the milk for your desired consistency. Season with salt and pepper to taste. Set aside.
• In a large skillet, heat the olive oil over medium heat. Add the diced onion and sauté until translucent, about 5 minutes. Add the minced garlic and cook for an additional minute, until fragrant.
• Add the ground beef to the skillet, breaking it apart with a spatula. Cook until browned and cooked through, about 7-10 minutes. Drain off any excess fat if necessary.
• Sprinkle the flour over the beef mixture and stir well to combine. Cook for 1-2 minutes to eliminate the raw flour taste. Pour in the beef stock and Worcestershire sauce, stirring to combine. Bring the mixture to a simmer and let it thicken for about 5 minutes. Add the frozen vegetables and stir to heat through.
• Preheat your oven to 400°F (200°C). In a baking dish, spread the beef and vegetable mixture evenly on the bottom. Top with the creamy mashed potatoes, spreading them out evenly with a spatula. Use a fork to create peaks and swirls on the surface for a beautiful golden finish.
• Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the top is golden brown and the filling is bubbling.
• Once baked, remove from the oven and let it sit for about 5 minutes before serving. Dish it out into bowls and enjoy your Simple Shepherd's Pie with a side of your favorite salad or crusty bread.