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Export 14 ingredients for grocery delivery
Step 1
Preheat oven to 450°F Spray a 13x9-inch glass baking dish with cooking spray.
Step 2
In a large pot of boiling water, cook penne for 8 to 10 minutes or until tender but firm. Drain.
Step 3
To make meat sauce: In a nonstick saucepan, heat oil over medium heat; cook onions and garlic for 4 minutes or until softened. Stir in beef; cook, stirring to break up meat, for 4 minutes, or until no longer pink. Stir in tomato sauce and stock. Cover and cook for 10 minutes or until thickened. Set aside.
Step 4
To make cheese sauce: In a nonstick saucepan, whisk together flour, milk, and stock until flour dissolves. Place over medium heat; simmer until mixture begins to boil. Reduce heat to low; cook, stirring occasionally, for 5 minutes, or until thickened. Stir in Cheddar. Remove from heat. Stir cheese sauce into meat sauce.
Step 5
Toss pasta with sauce. Pour into prepared baking dish. Sprinkle with mozzarella and Parmesan.
Step 6
Bake in centre of oven for 10 minutes or until bubbly.