Step 1

Heat oil in a large, deep frying pan over medium-high heat. Add bacon. Cook, stirring occasionally, for 4 minutes or until lightly browned. Add leek. Cook, stirring, for 2 minutes or until leek just softens. Reserve 1/4 of the bacon mixture.

Step 2

Meanwhile, place cheese sauce powder in a large bowl. Gradually add milk, whisking until smooth and combined. Whisk in mustard.

Step 3

Add wine to pan. Bring to a simmer. Add milk mixture to pan. Cook, stirring constantly, for 5 minutes or until mixture bubbles and thickens. Reduce heat to medium-low. Add pasta, broccoli and 1/3 cup water. Cook, stirring occasionally, for 5 minutes or until pasta softens. Season with salt and pepper.

Step 4

Sprinkle reserved bacon mixture and lemon zest over pasta mixture. Serve.