Lamb Nachos with Tzatziki

Ingredients

• 1 tablespoon extra-virgin olive oil
• 1/3 cup onion (diced)
• 3 rosemary sprigs
• 1 pound ground lamb
• 1/2 teaspoon dried oregano
• 1/2 teaspoon zaatar
• 1 teaspoon granulated garlic
• 1 teaspoon kosher salt
• tortilla chips
• 1 1/2 cup grated Kessari cheese
• 1 1/2 cups grated monteray jack cheese
• crumbled feta
• tzatziki (recipe below)
• tomato onion salad (recipe below)
• 1 32 ounce container Greek Yogurt
• 2 cucumbers (peeled, seeded and diced)
• 4 garlic cloves (finely chopped)
• 3 tablespoons extra-virgin olive oil
• 4 tablespoons lemon juice
• 1 cup tomatoes (seeded and diced)
• 1 cup white onion (diced)
• 1/4 teaspoon kosher salt
• 1 teaspoon fresh dill (finely chopped)
• 1 teaspoon fresh mint (finely chopped)
• 2 teaspoon extra-virgin olive oil