cast-iron onion omelet

Ingredients For cast-iron onion omelet

• 1 Tbsp

  olive oil
• 2 c

  coarsely chopped red onion
• 1/4 c

  chopped shallots
• 2 tsp

  sugar
• 1/4 c

  sliced green onion
• 2 tsp

  dijon mustard
• 1/2 tsp

  dried thyme
• 6

  eggs, or egg beaters equivalent
• 1/4 c

  water
• 1/4 tsp

  salt
• 1/4 tsp

  white pepper
• 1 c

  reduced-fat, shredded swiss cheese