Momosita's Sweet Potato Gratin

Total Time: 1 hr 40 mins Preparation Time: 20 mins Cook Time: 1 hr 20 mins

Ingredients

• Servings: 8
• 2 large sweet potatoes, sliced 1/8-inch
• 3 -4 small russet potatoes, sliced 1/8-inch
• 1 medium onion, diced
• 4 tablespoons butter
• 1 cup heavy cream
• 1 cup milk
• 4 -5 tablespoons dijon mustard
• 1 1/2 teaspoons salt
• 1/2 teaspoon pepper
• 1/4 teaspoon cayenne pepper
• 1 1/2 teaspoons thyme
• 1 cup panko breadcrumbs
• 1/4-1/2 teaspoon sage
• 3/4 cup sharp cheddar cheese, grated

Recipe

• 1 heat the oven to 400°f.
• 2 melt butter in a medium frying pan over medium-low heat. when it foams, add onion. slowly cook until soft and translucent; set aside.
• 3 cut into potatoes into 1/8" slices with a mandolin, sharp knife, or food processor with slicer attachment.
• 4 whisk the cream, milk, mustard, cayenne and thyme in a medium bowl and set aside.
• 5 in a 9x13" baking dish, layer 1/2 potato slices on the bottom, 1/2 cream mixture, add salt and pepper, 1/2 of the cheese. and ½ of the onions. repeat, layering the rest of the potato slices, cream mixture, salt and pepper, and the rest of the onions.
• 6 cover with foil and bake 50 minutes to one hour (the potatoes should be cooked through).
• 7 sprinkle panko or stuffing mix evenly over gratin.
• 8 lightly sprinkle sage over the gratin.
• 9 sprinkle the rest of the cheese over the gratin.
• 10 bake uncovered, about 10-20 minutes, until golden brown.
• 11 let it sit for 10 minutes or until the cream sauce thickens.