Gruyère, Ham, and Spinach Strata

INGREDIENTS

10 oz

Frozen Spinach (thawed)

1 1/2 cups

Onion (finely diced)

3 tbsp

Unsalted Butter

1 lb

Boar’s Head SmokeMaster™ Black Forest Ham (1 inch cubes)

1 tsp

Salt

1/2 tsp

Pepper

8 cups

French Bread (1 inch cubes)

2 cups

Gruyère, grated

1 cup

Parmigiano-Reggiano, finely grated

2 3/4 cups

Milk

Eggs (large)

1/2 tsp

Dry Mustard