Asparagus and Fontina Bake - Convenient Grocery Delivery

Ingredients

• 4 cups Stew's Sourdough Bread, cut into large cubes
• 2 Tbsp. Stew's 100% Italian Extra Virgin Olive Oil
• 1/2 small Onion, diced
• Stew's Kosher Salt
• Stew's Fine Ground Black Pepper
• 5oz. Baby Portabella Mushrooms, thinly sliced
• 8 Stew's Naked Cage-Free Eggs
• 2 cups Stew's Whole Milk
• 1 Tbsp. Dijon Mustard
• Grated zest of one Lemon
• 1 1/2 cups grated Fontina Cheese
• 3/4 lb. fresh Asparagus, trimmed, cut into 1-inch pieces