Cauliflower Gratin

Ingredients

• 1 large head (about 3 lb) cauliflower, cut into florets
• 1 Tbsp kosher salt, for the cooking water
• 3 Tbsp unsalted butter
• 3 Tbsp all-purpose flour
• 2 cups whole milk, warmed
• 1 tsp salt
• 1/2 tsp black pepper
• 1/4 tsp ground nutmeg
• 1 cup Gruyere or Swiss cheese, shredded
• 1/2 cup Parmesan, grated
• 1/2 cup panko or fresh bread crumbs
• 2 Tbsp unsalted butter, melted

Before you start

• Preheat oven to 375°F.
• Butter a 3-qt (9x13-in or 8x11-in) baking dish.
• Bring a large pot of water to a boil.

Directions

1. Boil 5 to 6 min, until crisp-tender; drain well: cauliflower, kosher salt.
2. Melt: unsalted butter.
3. Whisk in, cook 2 min: step 2, all-purpose flour.
4. Whisk in gradually, simmer 2 to 3 min until thick: step 3, whole milk.
5. Stir in off the heat until smooth: step 4, salt, black pepper, ground nutmeg, Gruyere or Swiss cheese, Parmesan.
6. Spread in the dish and cover with the sauce: step 1, step 5.
7. Toss together: panko or fresh bread crumbs, unsalted butter.
8. Scatter over the top: step 6, step 7.
9. Bake 375°F 25 to 30 min, until bubbling and browned: step 8.