Preheat the oven to 200 C Fan, Gas 7 for the toasts.
Bring the eggs to room temperature and boil for exactly 6 minutes. Run them under cold water for a few minutes, then peel and halve. Set aside.
Lay the slices of baguette on a heavy baking sheet and drizzle each piece with a generous amount of extra virgin olive oil. Bake for about 10 minutes, or until golden brown and crisp. Remove from the oven and cool.
Put the lentils into a large saucepan and cover them with water by about 3 cm. Stir in the Marigold powder and bring to the boil. Reduce the heat and simmer, half covered, for about 30 minutes or until just tender. Test them regularly to ensure you don’t overcook.
Make the tapenade. Either smash all the ingredients to a roast paste in a pestle and mortar or whizz to a rough paste in a food processor using the pulse function. Set aside.
For the dressing, whisk the mustard, vinegar and garlic together then gradually add the oils, whisking continuously to make a thick emulsion. Season then pour the dressing into a bowl large enough to take all the lentils.
Drain the lentils then tip into the bowl with the dressing. Toss thoroughly. Finely chop the celery, parsley and tarragon leaves and stir in. ( If the salad is being made in advance to be refrigerated don’t add the herbs until about an hour before serving.
When ready to serve spoon the salad on to serving plates and garnish with the eggs and the toasts spread generously with the tapenade.