White Cheddar Strata (Bread Pudding)
- 2 tablespoons unsalted butter, plus more for buttering casserole dish
- 1 cup chopped Ewa onion,
- 1 bunch Swiss chard, washed and cut into ribbons
- 1 teaspoon sea salt, divided
- 8 cups cubed sourdough bread
- 8 ounces sharp white cheddar, grated
- 2 ounces Asiago, grated
- 9 eggs
- 2 3/4 cups low-fat milk
- 2 tablespoons Dijon mustard
- 1/2 teaspoon fresh ground black pepper
- 1/4 teaspoon fresh grated nutmeg