Spinach, Caramelized Onion, and Muenster Au Gratin Potatoes48 Reviews
- Prep: 15 min
- Cook: 1 hr 30 min
- Ready In: 1 hr 45 min
“A creamy cheesy au gratin potato dish with added spinach and caramelized onion goodness.” - by Mrs.Williams
Original recipe yields 6 servings
- Preheat an oven to 400 degrees F (200 degrees C). Combine the potatoes and spinach in a 9x13-inch baking dish; set aside.
- Melt 3 tablespoons of butter in a saucepan over medium-low heat. Stir in the onion, and cook until dark brown, about 15 minutes. Stir in the garlic and flour; cook 1 minute more. Season with salt, and stir in the milk and cream. Bring to a simmer over medium heat; cook and stir until the sauce has thickened, about 10 minutes. Stir in 3/4 of the Muenster cheese until melted, and pour over the potatoes.
- Cover the potatoes with aluminum foil, and bake in the preheated oven 30 minutes. Uncover, and cook 20 minutes more, then sprinkle with the remaining Muenster cheese, return to the oven, and bake until the potatoes are tender and the cheese is bubbly, about 10 minutes more.
Amount Per Serving (6 total)
- 427 cal
- 34.7 g
- 17.2 g
Based on a 2,000 calorie diet
Reviews (48)Rate This Recipe
"Delicious! My new favorite au gratin recipe. I added a little extra salt just for personal preference...." See more"
Cat Lady Cyndi
"These potatoes are outstanding! I followed the recipe as written, and couldn't be more pleased, even the cook times are spot on! The sauce was perfect in 10 minutes, and the bake time is perfect also...." See more I was a bit skeptical when I poured the sauce over the potatoes and spinach because I didn't think it was enough, but I was so wrong, this recipe is perfect as written. Next time I'm going to use Swiss cheese and add some crumbled bacon, now that sounds wonderful as well! I agree with Christina, I believe many types of cheeses could be used in this with great results. Thanks for the recipe :)"
"Hubby said to give this one 6 stars...It was that good! My mom insisted she had a block of muenster cheese, but of course, she didn't, lol, so I ended up using Butter Kase, but I could totally see usi..." See moreng pretty much ANY cheese and this turning out fantastic! Instead of using 1 cup milk and 1 cup heavy cream, I just used 2 cups of milk and that worked out perfectly. These were truely delicious and I will be making them again and again! Thanks for sharing. :)"
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