Cheesy Copycat Ruth’s Chris Potatoes Au Gratin

Ingredients:

1/2 white onion minced

2 garlic cloves minced

2 tbsp butter plus more for greasing the baking dish

1/2 c. chicken stock

1 1/4 c. heavy cream plus more if needed

1 1/2 pounds russet potatoes peeled and sliced 1/8-inch thick

3/4 c. provolone cheese grated

1/2 c. Parmesan cheese grated

2 c. cheddar cheese grated

Fresh parsley chopped, for garnish

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