How to Make It
Preheat the oven to 400°. Coat the pumpkin pieces with olive oil and arrange in a single layer in a cast-iron skillet. Roast for 40 minutes or until softened.
In the meantime, whisk together the eggs, milk and cream cheese (if using). Season with salt and pepper.
Once the pumpkin is softened, remove the pan from the oven and immediately throw in the egg mixture. Top with chives, apples and spoonfuls of ricotta and transfer back to the oven. Cook for 20 minutes or until the frittata is slightly puffed and browned on top. Remove from the oven and let cool for 10 minutes.
Season with more salt and pepper and serve.