Add potatoes, pumpkin, and carrots to a big pot. Add water and boil/steam for 5 to 10 minutes, or until veggies are almost tender.
Meanwhile, heat coconut or olive oil over medium heat. Add onions and cook for 2-3 minutes, then add garlic and bell pepper and cook for 3-5 minutes more. Or until veggies are soft.
Preheat oven to 400°F or 200°C.
Drain potatoes, pumpkin, and carrots.
Add to the onion-bell pepper mix and season with rosemary, thyme, salt and black pepper. Mix well and remove from the heat.
Transfer half of the veggie-mix to an oven dish, add half of the cheese and cherry tomatoes.
Then add remaining veggie-mix, cherry tomatoes and finish with the remaining cheese.
Optional: add ¼ to ⅓ cup panko/breadcrumbs to the last cheese layer
Cook in the oven for 20-30 minutes or until the cheese has formed a nice brown crust on top.