Preheat the oven to 300F

Toast the walnuts in the oven for about 10 minutes to bring out the natural oils

Set aside and reset oven to 450F. Slice the feta cheese into slices about 1/2-inch thick then cut into medium-sized chunks

Dip the cheese in the pesto, coating all sides

Then coat with dry bread crumbs all sides and place on a lightly oiled baking dish. In a ceramic bowl, whisk together the mustard, vinegar, and the walnut oil

Season with salt and freshly ground pepper

Add the warm toasted wal- nuts

Taste for seasoning. Meanwhile, bake the cheese for 8 to 10 minutes, until light brown and slightly crusty on the outside. Toss the greens, pepper, and dressing together

Place on individual salad plates, top with warm feta "croutons" and garnish with grapes

Serve at once

Serves 6.