Prepare 5 large ramekins or a casserole dish with a quick spritz of non-stick spray. Melt your ghee in a large skillet over medium-high heat. Add the chopped onions and carrots, and saute, stirring every so often, until the onion is translucent for about 4 to 5 minutes. While the onions and carrots cook, boil water on the stove and peel your sweet potato. Add the sweet potato to the boiling water. Let it cook until fork-tender, then give it a good mashing.
Your veggies should now be ready – season your carrots and onions with pepper to taste, and stir in the tomato paste. Add the ground turkey and beef bouillon, and cook.
Break up the turkey as you go until browned for about 3 to 4 minutes. Add in your seasoning and turkey stock and bring the skillet to a boil. Let it reduce and cook until your pie filling thickens a bit, about 2 minutes.
Stir in your peas and kale. Pour the mixture to your prepared casserole dish or ramekins. Top the pie off with your mashed sweet potato. Sprinkle some sea salt over the top. Pop your cottage pie into the oven and let it bake for about 20 to 30 minutes. Let it cool slightly before serving.