Greek Turkey Burgers with Tzatziki - Shared Appetite

Ingredients

• 1 (16 ounce) package Butterball ground turkey
• 1/3 cup thawed and squeezed frozen spinach*
• 1/2 cup crumbled feta
• 1/2 lemon, zested
• 4 teaspoons fresh parsley, chopped
• 1/2 teaspoon onion powder
• 1/4 teaspoon garlic powder
• Kosher salt
• Tzatziki
• 1 cucumber, sliced
• 1 tomato, sliced
• Arugula or other lettuce, for serving
• 4 burger buns