Walnut Stuffed Salmon

Ingredients

• 2 tsp olive oil
• 1/4 cup onion (minced)
• 1 clove garlic (minced)
• 4 cups spinach (chopped)
• 1/2 tsp salt
• 1/2 tsp pepper
• 1 cup cooked brown rice
• 2 tsp lemon zest
• 1/4 cup old cheddar cheese (shredded)
• 1/2 cup walnuts (chopped)
• 1 lb salmon fillet (skinned and pin bones removed)