sautee with olive oil is a healthy way with garlic onion butter over pasta. peppers added is good
References :

This is a lovely dish………………..

400 grams uncooked vermicelli
4 tablespoons olive oil
1 teaspoon(s) finely chopped or grated garlic
4 cup(s) oyster mushrooms shredded
1 cup(s) sliced zucchini
½ cup(s) sliced asparagus spears
1 cup(s) diagonally sliced leeks with greens
4 fresh red chillies chopped
½ cup(s) grated parmesan cheese
salt and freshly ground pepper to taste
grilled tomato slices for garnishing

Cook the vermicelli in a pot of boiling salted water for about 5 minutes or till tender but just underdone. Drain and refresh in cold water. Drain well and toss in a little hot butter in a pan. Keep warm.
Blanch the zucchini and asparagus in boiling water for about 2 minute(s). Drain and refresh in cold water. Drain and keep aside.
Heat the olive oil in a pan and saute the garlic on low heat for about 2 minute(s).
Add the oyster mushrooms and saute on medium heat for about 4 minutes.
Mix in the blanched vegetables and red chillies. Cook for about 3 minutes or till the vegetables are tender but firm. Season with salt and freshly ground pepper.
At serving time, Pour the oyster mushroom mixture over a bed of vermicelli and sprinkle the freshly grated parmesan cheese on top. Serve immediately.
References :

I am a former chef and ther very delicate, I have used them in Saag dishes or with Paneer, cook them lightly and add to the dishes at the end of the cooking so you do not break them up.

While they are called oyster mushrooms they do not taste exactly like and oyster it was more about the colour, how about a a Pakora with them potatos and some other veg like zuccihini or cauliflower.
References :

This sounds terrific. It’s from http://www.veg-world.com/recipes/oyster.htm :

Wild Oyster Mushroom Stew

Whether you buy the mushrooms at the market or forage for them in the woods, this stew will taste better than anything similar you’ve eaten before.

Recipe for Wild Oyster Mushroom Stew, contributed by Mike Lewis

I got this recipe from Steve Brill’s wonderful Wild Vegetarian Cookbook. Steve, better know as ‘Wildman’ Brill, is a flamboyant New York-based naturalist who makes a living showing people how to forage for wild food in woods and city parks. There’s an amazing richness of uncultivated food growing all around us, but you need guidance from someone with Steve’s insight and expertise to know what it is safe to harvest and to eat. I’ve learned more on this subject from Steve’s books than I thought it was possible to know.

Oyster mushrooms are among the most abundant of wild mushrooms. They can be found throughout the year, most often on the trunks of dead trees, but if you are nervous about gathering them from the wild, they are also available in supermarkets. Living up to their name, their taste and smell is reminiscent of oysters.

This stew (which in Steve’s book is called You’re Not the Only Oyster Stew in the Sea), is a vegan version of the traditional oyster stew. The quantities given here will make six generous portions.

¼ tbsp. olive oil
Small onion, diced
Stick of celery, diced
3½ cups (28 fl oz, 840 ml) water
½ cup (4 oz, 110 g) silken tofu
2 tbsp. flaxseed or corn oil
1 tsp. Vege-sal or ½ tsp. salt
2 small potatoes, cooked and diced
4 cups (11 oz, 330 g) oyster mushrooms, sliced
3 tbsp. parsley, chopped

Sauté the onions and celery in the olive oil five minutes.

Meanwhile, purée the silken tofu in a blender with the water, flaxseed oil and Vege-sal or salt.

Add the tofu to the sautéed ingredients. Add the remaining ingredients except the parsley and reduce the heat to low. Simmer for five minutes, add the parsley, and simmer another five minutes.

(Recipe for Wild Oyster Mushroom Stew (October 2004)
References :
http://www.veg-world.com/recipes/oyster.htm