Potatoes Romanoff

• lbs potatoes (about 3 large)↗2 lbs
• cup finely chopped onion3⁄4 cup
• cups grated sharp white cheddar cheese2 1⁄2 cups
• teaspoons salt↗2 teaspoons
• teaspoon fresh ground black pepper↗1⁄4 teaspoon
• cups sour cream↗1 1⁄2 cups

Step-by-step instructions

1. 1

   Preheat oven to 425 degrees.

2. 2

   Pierce each scrubbed, unpeeled potato several times with a fork. Bake directly on oven rack until tender, about one hour. Cool potatoes completely. Wrap in plastic wrap and refrigerate overnight.

3. 3

   Preheat oven to 350 degrees.

4. 4

   Grate potatoes with skin left on, using large holes of box grater, into large bowl. Add onion, 1 3/4 cup of cheddar cheese, salt and pepper. Toss gently to combine. Add 1/2 of sour cream, stir gently to blend. Repeat with remaining sour cream.

5. 5

   Spoon potato mixture into buttered 1-2 quart baking dish. Sprinkle with remaining cheese. Bake in preheated oven until golden brown and bubbling, about 30 minutes,.