Mix instant yeast and sugar in warm water
In a larger bowl, whisk two eggs and mix with salt
Add 1 cup of milk and vegetable oil, and mix with the instant yeast
Add 1 and 1/2 cups of flour
Cover the bowl with plastic foil and let it sit for 30 minutes
Dust the dough and the surface with flour, shape the dough and cut it into four pieces
Shape each dough piece into an elongated bread
Cover a baking pan with baking paper and place the dough pieces
Score the bread
Cover with oil and take to the oven
Open the bread and take it to a skillet until slightly brown
Cut one onion and one pound of steak into small pieces
Fry the onion with butter
Cover another skillet with vegetable oil and fry the steak with salt
Make two heaps with the steak and cover with American cheese
Put the bread on top and take it out with a spatula
Cut in halves and serve