After having one of these burgers at a local catering place, I had to adapt my own version! These are extremely filling and taste great with chipotle mayonnaise and sliced cheese! These may be refrigerated or frozen for later use.
Step: 1
Bring beef broth to a strong boil in a saucepan over high heat. Stir in quinoa; reduce heat to low and cover. Cook until broth is absorbed, about 15 minutes. Remove from heat; let stand for 5 minutes. Fluff with a fork; let cool.
Step: 2
Chop spinach in a food processor; transfer to a bowl. Chop onion, Parmesan cheese, and garlic in the food processor; add to the spinach. Mix in cooled quinoa, bread crumbs, salt, red pepper flakes, garlic powder, and black pepper. Add egg whites and egg; stir burger mixture to combine.
Step: 3
Shape burger mixture into 4 equal patties. Heat a skillet over medium-high heat and coat with cooking spray. Cook patties until cooked throughout, 4 to 6 minutes per side. Serve on hamburger buns.
Per Serving: 336 calories; protein 18.2g; carbohydrates 47.2g; fat 8.6g; cholesterol 55.3mg; sodium 1305.3mg.