Blend together lukewarm water, salt, and an egg in a mixing bowl.
Gradually add flour and mix until a dough forms.
Knead the dough for 5-7 minutes until smooth.
Let the dough rest for 30 minutes to 1 hour.
Divide and shape the dough into balls, then flatten into discs.
Cook the flattened dough in a skillet until golden on both sides.
Saute green onions, spinach, salt, and red pepper in butter until tender.
Top the cooked flatbreads with the sauteed vegetables.
Serve warm with optional melted butter for brushing.