Pop's Spinach Bake | Cooking Professionally

Ingredients

• 1 cup fried onions, lightly crushed, divided
• 1 1/2 cups panko breadcrumbs
• 2 tablespoons olive oil
• 2 (9-ounce) bags fresh spinach
• 3 tablespoons butter
• 3 cloves garlic, minced
• 3 tablespoons flour
• 1 1/2 cups whole milk
• 1/2 teaspoon kosher salt
• 1/4 teaspoon black pepper
• garlic powder, to taste
• 2 ounces cream cheese
• 1 1/2 cups Gruyère cheese, shredded
• 1/3 cup parmesan, grated
• 1 lemon, zested