Photo of Au gratin potatoes by WW

Au gratin potatoes

Total Time
1 hr 50 min
20 min
1 hr 30 min
Our cheesy potato dish is the perfect crowd-pleaser—rich enough for your spouse and kids, yet light enough to keep your waistline slim. Just keep in mind that this dish has to bake in the oven for about an hour and 20 minutes. It's easy to pop it into the oven while you're prepping your other dishes, then letting it broil right before you're ready to serve. You'll love the savory mixture of Yukon Gold potatoes, sautéed onions, skim milk, and Mexican-style shredded cheese. Make it again and again whenever you need an impressive, hearty side dish that takes basic potatoes above and beyond.


Cooking spray

1 spray(s)

Salted butter

1 Tbsp


1 medium, thinly sliced

All-purpose flour

2 Tbsp

Fat free skim milk

2 cup(s)

Uncooked Yukon gold potato

2 pound(s), thinly sliced

Weight Watchers Reduced-fat Mexican style shredded cheese

1 cup(s)

Table salt

1 tsp

Black pepper

¼ tsp


  1. Preheat oven to 375°F. Coat a 2-quart covered baking dish with cooking spray.
  2. Melt butter in a large pot over medium heat. Add onion and cook, stirring occasionally, until onion begins to brown, about 5 minutes. Stir in flour; add milk slowly, stirring. Add potatoes and stir to mix. Bring to a boil. Stir in 3/4 cup of cheese, salt and pepper.
  3. Pour mixture into prepared baking dish and level out surface. Bake for 1 hour, uncovered. Cover and bake until potatoes are fork-tender, about 20 minutes more.
  4. Change oven temperature to broil. Sprinkle remaining cheese over potatoes. Broil 6 inches from the heating element until the cheese is golden brown, about 1 to 2 minutes. Allow to cool for 5 minutes before slicing into 8 pieces.