4 layered mashed potato mushroom Recipes

cremini mushrooms, shiitake mushroom caps, butter, chopped onion, chopped fresh thyme, salt, freshly ground black pepper, garlic cloves, minced, reduced-fat milk, all-purpose flour, cubed peeled yukon gold potato, reduced-fat milk, butter, salt, freshly ground black pepper, egg, lightly beaten, chopped fresh flat-leaf parsley (optional)

yukon gold potatoes, low-fat buttermilk, salt, divided, ground nutmeg, black pepper, divided, butter or stick margarine, minced fresh onion, garlic cloves, minced, chopped portobello mushroom caps (about 1 lb), chopped fresh or 2 tbsp dried basil, grated fresh parmesan cheese, paprika, olive oil

yukon gold potatoes, peeled and cut into 1-inch pieces, cremini mushrooms, halved, butter, fat-free buttermilk, egg plus 1 large white, beaten, salt, divided, extra virgin olive oil, chopped shallot, garlic cloves, finely chopped, trimmed and finely chopped chard leaves (may sub spinach), mushroom broth (may sub any veggie broth), all-purpose flour, fresh ground pepper, chopped fresh rosemary, freshly grated parmesan cheese, divided