4lbsrusset potato or red potatoescooked and diced into bite-size pieces
4tablespoonall-purpose flour
4tablespoonsbutter
3each garlic clovesmashed
8sprigs of Fresh thyme
1cupheavy cream
1cupmilk
2teaspoonsdijon mustard
2teaspoonskosher salt
2teaspoonsblack pepper
2cupssharp cheddar cheesedivided
1 ½cupspanko breadcrumbs
1teaspoonpaprika
Instructions
Preheat oven to 350 degrees.
Melt butter in a sauce pot. Add fresh thyme sprigs and smashed garlic cloves. Simmer over low heat for 3 minutes to infuse butter. Remove thyme sprigs and garlic.
Whisk in flour and cook for 2 minutes. Whisk in heavy cream and milk, stir constantly to avoid lumps. Add Dijon mustard, salt, and pepper.
Continue whisking over medium heat until sauce begins to thicken. Add 1.5 cups cheese and stir until melted. If sauce appears too thick to coat potatoes, add more milk until desired consistency.
Pour sauce over cooked and cut potatoes in a large bowl. Mix well and season with additional salt and pepper if needed.
Place potatoes in a prepared 9 x 13 baking dish. Bake for 30 minutes.
Mix remaining 1/2 cup cheddar, panko, and paprika in a small bowl. Sprinkle evenly over potatoes. Continue baking for another 10-15 minutes until topping is nicely browned. Garnish with thinly sliced green onions.