Preheat oven to 400° and grease a 11x8 pan.
In a large bowl, mash potatoes, lard, and salt together. Set as smooth as possible. Set aside.
In a large skillet, cook the onion with the salt, garlic, and carrots. Cook for 10 minutes until veggies have softened.
Add beef and cook for 5 minutes or until mostly cooked through.
Add pepper, thyme, rosemary, tomato paste, and coconut aminos. Cook for 5 minutes.
Pour the meat mixture into the prepared pan.
Top with mashed sweet potatoes and bake for 30 minutes.