Ingredients
- Olive oil
- 1 cup 2% milk
- 1/3 cup all-purpose flour
- 8 large eggs
- 2 Tbsp. Dijon mustard
- Kosher salt and ground pepper
- 1 package frozen chopped spinach, thawed and squeezed dry
- 1 cup finely shredded cheddar cheese
Directions
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Preheat oven to 350º F. Brush a 10×5-inch rimmed baking sheet or jelly-roll pan with oil. Line bottom of pan with parchment, leaving a 1-inch overhang on the two shorter sides. Brush parchment with oil.
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In a bowl, whisk together milk and flour. Add eggs, mustard, 1 tsp. kosher salt, and 1 tsp. pepper; whisk to combine. Pour into pan. Sprinkle spinach over top in an even layer.
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Bake until edges of omelet are set, 10-12 minutes. Sprinkle with cheddar; bake until cheese has melted, 2-4 minutes. Beginning at one shorter end, lift parchment, and roll up omelet tightly, peeling back parchment as you go. Slice and serve with toast.