Spinach Gratin

Preheat and prepare the baking dish: Preheat your oven to 400°F and grease a 1 ½-quart baking dish with oil or butter.
1 tablespoon butter
Sauté the aromatics: In a pan, melt the butter over medium-low heat. Add the onion and cook until softened, about 5 minutes. Stir in the garlic and cook for another minute until fragrant.
2 tablespoons minced onion, 1 clove garlic
Make the creamy sauce: Add the cream, cream cheese, salt, and pepper to the pan, stirring until smooth. Let the mixture simmer for 1-2 minutes or until it thickens slightly.
⅔ cup half and half, 4 ounces cream cheese, black pepper, ⅛ teaspoon salt
Add the cheese and spinach: Remove from heat and stir in ¼ cup of Gouda and 2 tablespoons of Parmesan cheese until fully melted. Add the spinach and mix to combine.
½ cup shredded Gouda cheese, ¼ cup shredded Parmesan cheese, 20 ounces frozen chopped spinach
Assemble and bake: Transfer the spinach mixture into the prepared baking dish, spreading it evenly. Top with the remaining cheese and breadcrumbs.
2 tablespoon Panko bread crumbs
Bake for 15-20 minutes, or until the top is golden and the dish is heated through.