How to Cook Yummy Spinach Au Gratin

Spinach Au Gratin.

You can have Spinach Au Gratin using 15 ingredients and 8 steps. Here is how you achieve it.

Ingredients of Spinach Au Gratin

1. You need 1 Tbs. of olive oil.
2. You need 1 of small onion (finely chopped).
3. Prepare 2 Tbs. of All-purpose flour.
4. Prepare 2 packages (10 oz.) of frozen spinach.
5. It's 3/4 Tsp. of salt.
6. It's 1/2 Tsp. of black pepper.
7. Prepare 1/2 Tsp. of dried thyme.
8. Prepare 1 of garlic clove, minced.
9. Prepare 3/4 cup of whole milk.
10. You need 1/3 cup of heavy cream.
11. Prepare 3/4 cup of Parmesan cheese (grated) - divided.
12. Prepare 3/4 cup of Havarti cheese (grated) - divided.
13. It's 4 Tbs. of unsalted butter (melted).
14. You need 1 Tsp. of dried nutmeg.
15. You need 3/4 cup of breadcrumbs.

Spinach Au Gratin instructions

1. Cook spinach according to package directions. Allow this to cool and then drain and squeeze out all liquid..
2. Preheat oven to 375˚F and butter a gratin baking dish..
3. In a medium saucepan over medium heat, heat olive oil and sauté the onion for 3-4 minutes..
4. Sprinkle in the flour and continue sautéing while mixing for 30 seconds..
5. Add the cooked spinach, salt, pepper, dried thyme, and garlic to the pan and stir until the ingredients are combined..
6. Stir in the milk, heavy cream, and half the Parmesan and Havarti cheese into the spinach mixture. Add nutmeg, mix lightly, and heat through to evaporate liquid. Pour out pan ingredients into the baking dish..
7. In a medium bowl, stir together melted butter, bread crumbs, and remaining cheese. Mix well. Spoon the mixture evenly over the gratin top. Drizzle olive oil on top..
8. Bake 15 minutes, until it is hot and bubbly, and the breadcrumbs have turned golden brown..