Vegetarian recipe ideas
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Toast the bread, then cut into 1cm cubes. Tip into a bowl, drizzle with the olive oil, then add a pinch of salt, the seeds and crispy onions. Toss to coat the croutons in the seeds and onions.
In another large bowl, whisk together the dressing ingredients until smooth and creamy. Loosen with 1-2 tbsp of water to make a drizzling consistency if needed, and season with a little salt (the anchovies will add plenty) and lots of cracked black pepper. Remove half of the dressing from the bowl.
Toss the lettuce, mackerel and bacon, if using, in the dressing, and toss to coat everything evenly. Divide between plates and scatter with the seedy croutons and chives, and some parmesan shavings to serve, alongside the extra dressing to add if people prefer.