Baked Gruyere and Sausage Omelet Recipe | Christmas Recipes in English

Ingredients

• Butter, for greasing baking dish
• 2 tablespoons olive oil
• 1 small onion, diced
• 1/2 pound mild turkey sausage, casings removed
• 8 large eggs
• 1/3 cup whole milk
• 1 teaspoon kosher salt
• Freshly ground black pepper
• 1 red bell pepper, diced
• 1 1/2 cups (4 ounces) grated Gruyere cheese
• 1/4 cup plus 2 tablespoons chopped fresh flat-leaf parsley