In a small bowl, whisk together the oil and honey until smooth.
Add the vinegar and mix.
Season with salt and pepper to taste. Set aside
In a large bowl, add the lettuces, peaches, berries and mint. Gently mix the ingredients together.
Just before serving, pour dressing over salad, and toss to coat.
Add the cheese and croutons, and turn a few times to incorporate all of the ingredients.
Serve on individual plates or in a large salad bowl.