|Frozen chopped cooked spinach||10 Ounce, cooked, drained (1 Package, 284 Gram)|
|Lean ground beef||1 Kilogram|
|Onion||1 Medium, finely chopped|
|Seasoned bread crumbs||50 Milliliter|
|Parmesan cheese||30 Milliliter (2 Tablespoon)|
|Salt||10 Milliliter (2 Teaspoon)|
|Pepper||2 Milliliter (1/2 Teaspoon)|
|Crumbled oregano||2 Milliliter (1/2 Teaspoon)|
|Tomato sauce||250 Milliliter (1 Cup)|
|Condensed beef broth||1 Can (10 oz) (284 Milliliter)|
Combine first 9 ingredients in large bowl; mix lightly.
Shape into 14 patties, using about 75 mL (1/3 cup) mixture for each.
Spray frying pan with cooking spray.
Brown patties on both sides, remove from pan.
Pour tomato sauce and broth into pan.
Bring to a boil, scraping up brown bits; add hamburger patties.
Cook, uncovered, over low heat for 20 minutes, baste often.