MEATBALL SUB CASSEROLE – Find Tex

Ingredients

• 2 tablespoons extra-virgin olive oil
• 1 pound/ 450 g cremini mushrooms, trimmed and sliced
• 5 medium cloves garlic, finely chopped
• 2 teaspoons dry mustard
• 1 teaspoon onion powder
• 1 teaspoon ginger
• 5 ounces/ 150 g baby spinach
• 12 large eggs
• ¾ cup half-and-half
• 1 ½ cups shredded Gruyère cheese
• 2 teaspoons fresh thyme leaves