Individual potato stacks make an easy presentation for a brunch or dinner, with healthy Bok Choy joining comforting potatoes in a lightened creamy sauce.
Makes 12 individual gratins
Heat the oven to 400 degrees.
Melt 2 tablespoons of the butter in a medium skillet over medium-high heat. Add the Bok Choy and Pimentón de la Vera spice. Sauté until the greens wilt and soften slightly, about 3 minutes. Stir in 1 tablespoon of broth, scraping up any bits stuck to the pan. Set aside.
Melt 1 tablespoon butter in a small skillet over medium-high heat. Add the red onions and sauté until softened. Reduce the heat to medium and continue to cook until lightly caramelized, about 20 minutes.
In a small pot over medium heat, bring the buttermilk, half and half, the remaining ½ cup of broth, the remaining 2 tablespoons butter, cheese, garlic, mustard, salt, and pepper to a slow simmer for 5 minutes.
Peel the potato and thinly slice – I recommend the thinnest or second thinnest setting on a small mandolin. Stack the larger slices together and cut into 4 equal pie shaped pieces. Lay 2 rows of potatoes in each of 12 cups of a cupcake pan. Divide the Bok Choy between the cups, and finish with another 2 rows of potatoes. Top with the onions, and spoon 3 tablespoons of liquid over each gratin.
Bake for 30 minutes. Add a sprinkling of bread crumbs, and bake another 5 minutes or until the potatoes are tender. Serve warm.