Homemade Greek Chicken Burgers with Sun-Dried Tomatoes and Herbs

Ingredients

• 1 lb ground chicken (450 g)
• 2 oz diced red onion (60 g)
• 3 garlic cloves, minced
• 2 oz sun-dried tomatoes, finely chopped (60 g)
• 1 cup baby spinach, roughly chopped (30 g)
• 1 tbsp fresh dill, chopped
• 2 tsp dried oregano
• 1 tsp kosher salt
• ½ tsp ground black pepper
• 2 tbsp extra virgin olive oil
• Butter lettuce leaves
• Tzatziki sauce
• Crumbled feta cheese
• Sliced red onion
• Sliced tomato
• Sliced avocado