Clean and wash the sugar snap peas, cut them diagonally into pieces and blanch them in boiling salted water for about 3 minutes. Drain and rinse with cold water. Wash and halve the tomatoes. Roast pine nuts in a pan without fat while turning.
Remove from the pan immediately. Wash the basil, shake dry and pluck the leaves from the stems. Cut the leaves into fine strips, except for a few for garnishing.
Peel and finely dice the shallots. Mix vinegar, mustard, shallots, salt and pepper. Beat the oil down in a thin stream. Mix the mangetouts, basil strips and tomatoes. Carefully fold in the vinaigrette.
Arrange salad on a plate, sprinkle with pine nuts and pepper and garnish with basil. Baguette tastes good with it.