Add the walnuts to a large frying pan over a low heat and toast gently for 4 minutes. Reserve to one side.
Step 2
Tear the lettuce leaves into large strips and slice the celery into bite sized chunks. Add to a mixing bowl with the blueberries.
Step 3
Add the toasted walnuts to the salad and stir well to combine.
Step 4
Peel and mince the garlic and add to a small bowl with the blue cheese, yoghurt and lemon juice. Season with a little salt and pepper and stir well to combine.
Step 5
Pour the blue cheese dressing over the salad and stir through until the salad is coated in the dressing. Serve immediately.