Butternut Squash Frittata with Onions, Sage, and Humboldt Fog

Ingredients

• ½ pound butternut squash
• 3 tablespoons olive oil (divided)
• Kosher salt
• Freshly cracked black pepper
• 1 small onion (thinly sliced)
• 8 eggs
• 2 tablespoons milk or cream
• A big pinch of nutmeg
• 1 tablespoon finely chopped sage (plus a few whole leaves for garnish)
• 3-4 ounces Humboldt Fog from Cypress Grove (rind removed, crumbled)