Grandma'S Famous Potatoes Au Gratin

• GROUP ONE
• 3 tablespoons grated parmesan cheese
• 1/2 teaspoon freshly cracked black pepper
• 1 1/2 teaspoons kosher salt
• GROUP TWO
• 3 lbs yukon gold potatoes, peeled and sliced thin
• 1 yellow onion, sliced into thin rings
• 3 cups shredded sharp cheddar cheese
• GROUP THREE
• 1 cup heavy cream
• 3/4 cup strong chicken broth
• 1/4 cup dry white wine
• 1 teaspoon rubbed sage
• 1/2 teaspoon prepared horseradish or 1/2 teaspoon dry mustard
• 1 dash ground nutmeg
• GARNISH
• 2 tablespoons powdered parmesan cheese
• 1 dash paprika
• parsley flakes

1. PREHEAT oven to 400u0b0F; MEASURE the GROUP ONE ingredients into a small bowl (3 tablespoons parmesan cheese, 1 1/2 teaspoons kosher salt and 1/2 teaspoon ground black pepper); MIX well with fork; SET aside.
2. PEEL and slice potatoes thinly; PEEL and slice onions thinly (into rings); GRATE 3 cups sharp cheddar cheese.
3. LIGHTLY grease a 2.5 quart dish or 9x13 baking dish; LAYER 1/3 of the potatoes, 1/2 of the onion, 1/3 of the cheese, and 1/3 of the GROUP ONE mixture.
4. REPEAT layers, finishing with with remaining potatoes, the remaining GROUP 1 mixture, and the remaining cheese.
5. COMBINE 1 cup heavy cream with 3/4 cup strong chicken broth and 1/4 cup dry white wine in a bowl; ADD 1 teaspoon rubbed sage, 1/2 teaspoon prepared horseradish (or 1/2 teaspoon dry mustard), and 1 dash ground nutmeg; WHISK mixture well; POUR mixture evenly over potatoes.
6. SPRINKLE 1/8 cup powdered parmesan cheese, 1 dash paprika, 1 dash freshly cracked pepper and 1/2 teaspoon chives or parsley, evenly over the top of mixture in baking dish for the GARNISH.
7. BAKE 1 hour.
8. ALLOW to stand about 10 minutes to cool and set, before serving.
9. SERVE.
10. GET READY to melt into your seat after just one taste!

group one, parmesan cheese, freshly cracked black pepper, kosher salt, group two, gold potatoes, yellow onion, cheddar cheese, group three, heavy cream, chicken broth, white wine, sage, horseradish, ground nutmeg, powdered parmesan cheese, paprika, parsley flakes

Taken from www.food.com/recipe/grandmas-famous-potatoes-au-gratin-365998 (may not work)