Ingredients
Pasta
- 14 oz (400 g) rigatoni (or another short pasta)
Sauce
- 2 tablespoons (40 g) unsalted butter
- 1 medium red onion, finely diced
- 3 tablespoons (45 g) plain flour
- 2 1/2 cups (600 ml) semi-skimmed milk
- 1/2 teaspoon salt
- 1/4 teaspoon freshly ground black pepper
- 1 teaspoon Dijon mustard
- 7 oz (200 g) low-fat sharp cheddar
Additional Ingredients
- 10.5 oz (300 g) albacore tuna, drained and flaked
- 1 cup (165 g) sweetcorn
- Fresh parsley, to garnish
Instructions
- Cook the pasta: Bring a large pot of salted water to a boil and cook the rigatoni al dente according to the package instructions. Drain and set aside.
- Prepare the onion: While the pasta cooks, melt the butter in a large, deep pan or Dutch oven over medium heat. Add the finely diced red onion and sauté for 2-3 minutes until softened, stirring regularly.
- Make the roux: Whisk in the plain flour until it forms a thick paste (roux), then gradually add the semi-skimmed milk while whisking continuously to avoid lumps. Once all the milk is incorporated, simmer the sauce for 1-2 minutes, stirring occasionally until thickened.
- Season the sauce: Preheat the oven to 390°F (200°C). Add salt, freshly ground black pepper, and Dijon mustard to the sauce, stirring well to combine.
- Add cheese to sauce: Remove the pan from heat and stir in all but a handful of the sharp cheddar cheese, mixing until melted and smooth.
- Combine pasta with sauce: Add the drained pasta to the cheese sauce, tossing to coat evenly. Gently fold in the flaked tuna and sweetcorn.
- Transfer to baking dish: Pour the mixture into a baking dish, then sprinkle the remaining cheese over the top evenly.
- Bake: Place the dish in the oven and bake for 15 minutes or until the cheese on top is golden and bubbly.
- Garnish and serve: Sprinkle freshly chopped parsley or chives over the baked pasta and serve hot.
Notes
- Using rigatoni or another short pasta helps the sauce cling better to each piece.
- Semi-skimmed milk provides creaminess with moderate fat content, but whole milk can be used for an even richer sauce.
- Low-fat sharp cheddar gives flavor with less fat, but feel free to use regular cheddar if preferred.
- Ensure the roux is cooked properly to avoid a raw flour taste in the sauce.
- Adjust seasoning to taste, especially with salt and pepper after adding mustard and cheese.
- To add extra texture, consider topping with breadcrumbs before baking.
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Category: Pasta Bake
- Method: Baking
- Cuisine: British
- Diet: Low Fat