01 -
Heat 1 tablespoon of olive oil in a pan over medium heat. Add the onions and sauté until tender, about 10-15 minutes.
02 -
Reduce the heat, add ¼ cup of water, cover, and cook the onions until caramelized, about 50 minutes. Stir every 10 minutes for the first 30 minutes and every 5 minutes for the last 20 minutes. Add more water if needed.
03 -
Meanwhile, toss the pumpkin with olive oil, salt, and pepper. Roast in a preheated 350°F (180°C) oven for 30-40 minutes until tender. Set aside.
04 -
Brush a sheet of phyllo dough with olive oil and fit it into a greased 9-inch pie dish, leaving the ends overhanging. Repeat with the remaining phyllo sheets, layering them.
05 -
In a bowl, mix together the caramelized onions, roasted pumpkin, eggs, milk, gorgonzola, and sage.
06 -
Pour the mixture into the phyllo crust.
07 -
Bake the quiche in a preheated 375°F (190°C) oven for 25-45 minutes, or until golden brown and set in the center.