Ingredients:
- large Eggs
- /2 cup Milk or Cream (Whole or 2%)
- tablespoons All-Purpose Flour
- /2 teaspoon Baking Powder
- /4 teaspoon Salt
- /4 teaspoon Black Pepper
- tablespoon Unsalted Butter
- cup Firm Vegetable (e.g., Asparagus, Mushrooms, Spinach), chopped or sliced
- /4 cup Onion or Shallot, finely diced
- cup Shredded Cheese (e.g., Gruyère, Sharp Cheddar), divided
Instructions:
- Preheat oven to 375°F (190°C). Generously butter a 9-inch or 10-inch oven-safe skillet.
- Lightly sauté the diced onion/shallot and chosen vegetables until softened. Set aside to cool slightly.
- In a medium bowl, whisk together the flour, baking powder, salt, and pepper.
- In a separate, large bowl, lightly whisk the eggs until just combined. Whisk in the milk/cream.
- Gradually whisk the dry ingredients into the egg mixture until just smooth. A few small lumps are acceptable.
- Gently fold in the sautéed vegetables and two-thirds (2/3) of the shredded cheese.
- Pour the entire mixture into the prepared, buttered skillet. Sprinkle the remaining one-third (1/3) of the cheese over the top.
- Bake for 15 minutes. Reduce the oven temperature to 350°F (175°C) and continue baking for another 10–15 minutes, or until the omelette is set, puffed slightly, and golden brown.
- Remove from the oven. Let it rest in the pan for 5 minutes before slicing into wedges and serving immediately.