Rockin' Moroccan Burger

Ingredients

• 1 lb (500 g) lentils, whole red, cooked, pureed
• 1 lb (500 g) mushrooms, roasted, pureed
• 1 lb (500 g) ground beef
• 1 cup (250 mL) onion, chopped, sautéed
• 1/4 cup (60 mL) garlic, chopped, sautéed
• 1/4 cup (60 mL) mint, chopped
• 1/4 cup (60 mL) basil, chopped
• 1/4 cup (60 mL) flat leaf parsley, chopped
• 1 tsp (5 mL) salt
• 2 qts spinach leaves
• 14 slices tomato
• 3 1/2 cups (875 mL) lemon za’atar aioli*
• 14 burger buns