HAM, CHEESE AND SPINACH STRATA – Trish Magwood

Ingredients

• 3 tbsp (50 mL) butter
• 1 medium onion, finely chopped
• 3/4 lb (375 g) thinly sliced Black forest ham, cut in wide ribbons
• 6 cups (1.5 L) baby spinach, washed, dried and coarsely chopped
• 2 cups (500 mL) grated Gruyère
• 1 cup (250 mL) grated Parmigiano-Reggiano
• 1 baguette, cut into 1-inch (2.5 cm) cubes (about 7 cups/1.75 L)
• 9 large eggs
• 3 cups (750 mL) 2% milk
• 2 tbsp (30 mL) Dijon mustard
• 2 tsp (10 mL) dry mustard
• 1 tsp (5 mL) kosher salt
• 1/4 tsp (1 mL) nutmeg
• A few pinches cayenne pepper
• Black pepper to taste