Amount	Ingredient
1 Teaspoon	canola oil
4 Teaspoons	Dijon mustard
4 (4-Ounce)	FROZEN TURKEY BURGERS, grill flavored preferred
4	Kaiser rolls, split and toasted
4 to 8	leaves romaine lettuce, washed, drained and chilled
4 Ounces	sliced Swiss cheese
1/4 Cup	sour cream
8	Thin slices red ripe tomatoes
4 Ounces	thinly sliced fresh mushrooms
1/4 Cup	thinly sliced fresh scallions