Prep Time: 10
Cook Time: 15
Serves: Serves: 4
Melt butter in large ovenproof skillet over medium heat. Swirl butter up sides of pan to prevent frittata from sticking. Add potatoes to skillet; cook 3 minutes, stirring occasionally.
Beat eggs in medium bowl. Stir in salsa, salt, and 1 cup cheese.
Reduce heat to medium. Add egg mixture; stir gently to combine. Cover; cook 6 minutes without stirring or until eggs are set around edges. (Center will be wet.) Sprinkle remaining cheese evenly over frittata. Broil in preheated broiler 2 minutes or until cheese is melted and eggs are set in center. Cut into wedges. Serve with sour cream and cilantro, if desired.