Here are some recipes using walnut oil -
PEAR SALAD WITH MIXED GREENS AND
WALNUTS (from Cooks.com)
1 med. shallot
1/2 c. olive oil
1 1/2 tbsp. walnut oil
1 1/2 tbsp. red wine vinegar
1 tbsp. Dijon mustard
1/2 tsp. sugar
1/4 tsp. salt
Freshly ground pepper
Mince shallots in food processor. With machine running, add both oils, vinegar, mustard, sugar and salt and pepper and mix 10 seconds.
SALAD:
1 1/2 tbsp. walnut oil
1/2 c. walnut pieces
2 tbsp. sugar
1 lg. firm Bartlett pear, unpeeled, halved, and cored
10 c. torn mixed greens including at least 1 of the bitter greens such as watercress, arugula or endive
Heat walnut oil in heavy medium saucepan over medium heat. Add nuts and sugar. Cook until light brown; stir frequently. Transfer to a bowl to cool. Core and halve the pears.
Cut each pear half lengthwise into 1/4 inch slices. Transfer to a shallow bowl. Pour dressing over (can be done 2 hours ahead). Cover and chill.
Wash greens; tear into bite-size pieces and combine in large salad bowl. Add dressing to greens and toss gently. Divide greens among plates. Take pears from dish with slotted spoon and put 3-4 pear slices atop each. Sprinkle with walnuts. Serves 4.
Here's a Jacques Pepin recipe that includes a simple walnut oil dressing -
link at bottom of recipe
Salad Tulipe with Walnut Dressing
Yield: 6 servings
This salad is a flavorful combination of field salad, pecans, pears, goat cheese, and walnut-oil dressing. The field or corn salad (doucette or mâche in French) is planted around the end of August and gets large enough to be ready for picking at the end of November. After the first frost, it becomes sweeter and tenderer. If these greens are not available, the salad can be made with a mesclun mixture, widely available now in most supermarkets.
The pears must be ripe; Bartlett, Comice, or Anjou pears
36 to 40 segments field or corn salad (mâche)
(6 to 8 pieces per person), or 6 cups mesclun salad greens, thoroughly rinsed and dried
1 tablespoon unsalted butter
30 pecan halves
Pinch salt
3 ripe pears (Bartlett, Comice, or Anjou)
1 tablespoon lemon juice for pears
1 teaspoon coarsely cracked black pepper
(see illustrated mignonnette technique, page 30)
3/4 pound goat cheese, preferably the small, round, semi-hard variety
Walnut Dressing
1 tablespoon sherry vinegar
2 tablespoons walnut oil
1/4 teaspoon salt
1/4 teaspoon coarsely ground black pepper
1 tablespoon peanut or safflower oil
Preheat the oven to 375 degrees. Try to keep each individual bunch of field salad attached together. Pinch off the bottom of the root from each, and rinse the salad carefully in cold water. Dry in a salad spinner.
Place the butter on a small baking tray, and heat in the 375-degree oven for about a minute to melt. Scatter the pecans and the salt over the butter, toss together, and bake for 6 to 8 minutes, until nicely browned. Set aside. The pecans should be served at room temperature.
Halve the three pears lengthwise, then core, peel, and cut each half into three pieces. Sprinkle with lemon juice to prevent discoloration, then sprinkle with the cracked pepper. Cut the goat cheese into small wedges.
For the dressing: Whisk the vinegar, walnut oil, salt, pepper, and peanut oil in a small bowl.
Put three pieces of pear near the edge of each plate with wedges of cheese and pecans between. Arrange bunches of field salad in the center of the plates, and sprinkle approximately 2 teaspoons of dressing on each salad. Serve immediately.
http://topchefs.chef2chef.net/recipes-2/pepin/salad-tulipe-walnut-dressing.htm
(sorry, I don't know what mignonnette technique is.)
My salads would be simpler than these, hey, I'd just toss some walnut pieces in with some leaves, but the recipes give me Ideas.