If you are using ground beef use beefy onion powdered soup concentrate. Its in the soup aisle. If you like to add more veggies add green peas and carrots and large chopped onions and mushrooms. Tastes great as a potato topping.
This is basically what a shepherds pie is except that on shepherds pie you take the potato a step further and mash it and bake it on top of the beef mixture but this mixture also works well as a topper.
@ArtieKat in the states, both are shepherds pie. We don't have a lot of lamb here. Most places if you order shepherds pie in a restaurant you'll get beef. I've never even heard of cottage pie before.
@ArtieKat lol Wow I believe you but not here in the USA. I've been cooking various Shepherd's Pie recipes for years and that particular detail has been lost over here.
@iamnikki Better than the taco meat from the original recipe I would imagine. I actually had a sweet potato shepherds pie and it tastes good. This frozen one is ok also but it uses ground turkey instead of beef.