French Onion Potato Casserole - Wyse Guide

"This casserole combines two of the most wonderful side dishes: mashed potatoes and French onion dip to create a delicious French onion potato casserole!..."

INGREDIENTS
3 tbsp unsalted butter
3 large onions (sliced)
½ tsp kosher salt
2 tsp Worcestershire sauce
3 cloves garlic (minced)
3 lb russet potatoes
8 oz cream cheese
1 cup sour cream
¾ cup whole milk (warmed)
1 tsp black pepper
1 ½ tsp kosher salt
¾ cup Parmesan cheese
2 cups shredded Monterey Jack cheese
chives
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