How to Make It
Preheat the oven to 350°. In a medium skillet, cook the bacon over moderately low heat until lightly browned and crisp, about 8 minutes. Drain on paper towels.
Spread the bread cubes and walnuts on 2 baking sheets and bake for about 8 minutes, or until browned and crisp.
In a large salad bowl, whisk the vinegar with the garlic and olive and walnut oils; season with salt and pepper. Add the mesclun, tomatoes and chives and toss to coat. Add the bacon, croutons and walnuts, toss well and serve.