Ingredients
Method
Cook the Pasta
- Preheat the oven to 190 C / 375 F. Butter a 9x13-inch baking dish.
- Bring a large pot of salted water to a boil. Cook macaroni until just al dente, about 7 to 8 minutes, then drain, reserving 1/2 cup of the pasta water.
Make the Cheese Sauce
- In the same pot, melt 4 tbsp butter over medium heat. Whisk in the flour and cook 1 to 2 minutes until it smells toasty and turns pale gold.
- Slowly whisk in the warm milk. Cook 5 to 6 minutes, stirring often, until the sauce thickens enough to coat the back of a spoon.
- Remove from heat. Stir in the cheddar and Gruyère in small handfuls until smooth. Season with smoked paprika, mustard powder, garlic powder, salt, and pepper.
Assemble and Bake
- Fold the drained macaroni and chopped brisket into the cheese sauce until fully coated. Add reserved pasta water a tablespoon at a time if the sauce feels too thick.
- Transfer everything to the prepared baking dish. Toss panko with melted butter and scatter it evenly over the top.
- Bake for 15 minutes until bubbling around the edges, then switch to broil and cook 2 to 3 minutes until the panko is golden brown. Watch closely so it doesn't burn.
- Let it sit 5 minutes before serving. Scatter chives over the top.
Notes
- Use brisket that's still moist; dry ends turn tough after baking.
- Grate cheese while cold for cleaner shredding and better melt.
- Cool the roux slightly before adding cheese to avoid grease separation.
- Bake in a shallow dish so the topping has more surface area to crisp.
