Come Into My Kitchen - Crustless Broccoli Quiche

Ingredients

• 2 tablespoons unsalted butter, plus more for greasing the pan
• 1/2 cup chopped shallots, from about 2 shallots
• 10 oz broccoli florets, cut into 1-inch pieces or smaller
• 1 teaspoon salt, divided
• 6 large eggs
• 1-3/4 cups heavy cream
• Pinch ground nutmeg
• 1/8 teaspoon cayenne pepper
• 1-1/2 cups (about 5 oz) shredded Gruyère