How to make the nutrient hamburger

"Hamburger" is a noun that everyone knows. Now we can buy a lot of kinds hamburgers in some fast-food stores. Sometimes we can make some nutrient hamburgers by oursalves. And it's easy to make.
First, prapare some hamburger's breads, mayonnaises, mashed onions, cheeses, slice tomatoes, vegetables, peppers, diced meat. Then, put and mix the diced meat, mashed onions, and peppers in the bowl. And fired them. Next, spread some mayonnaises on the hamburger's breads. Then, toast them three minutes in the oven. Third, open the hamburger's breads and put the vegetable, a slice tomato, meat, and cheese. Finally, the nutrient hamburgers are finished.