Pizza Burgers - cooking recipe

Ingredients

1 lb. ground beef
1/4 c. finely chopped onion
1 tsp. salt
1 (6 oz.) can tomato paste
Mozzarella cheese
1/3 c. grated Parmesan cheese
1/2 tsp. oregano
hamburger buns

Preparation

Combine all ingredients.
Spread evenly on bottom half of buns.
Broil until meat is cooked and edges of buns are toasting. Watch very closely.
During last 2 minutes put 2 strips of cheese crisscrossed on top of each bun.
Brown tops of buns.