Place the diced bacon into a dish and precook for 10 minutes in the oven at 180 degrees.
Using your oven pan, spread the pumpkin tagliatelle out evenly. Add the chopped onions, mushrooms, feta and sage. Add the bacon, and then season with salt and pepper. Drizzle with olive oil if desired.
Cook in the oven for 20 minutes at 180 degrees, turing it up to grill for the last 3 minutes if you want to get those toppings extra crispy!