greek lamb burgers w/ spinach & red onion salad

Ingredients For greek lamb burgers w/ spinach & red onion salad

• 1/3 c

  chopped fresh mint
• 2 tsp

  paprika
• 3/4 tsp

  ground cinnamon
• 1/2 tsp

  salt
• 3 Tbsp

  olive oil, divided
• 1 1/3 lb

  ground lamb
• 4

  hamburger buns or small ciabatta rolls
• 1 1/2 c

  baby spinach leaves
• 1 1/3 c

  crumbled feta cheese
• 4

  red onion slices, 1/4-inch thick
• 1 1/2 tsp

  balsamic vinegar