1cupleeks chopped into large slices (white part only)
2tablespoons melted butter
2tablespoons grape seed oil
Preheat oven to 425 degrees. Half and quarter potatoes. Place potatoes into a large bowl. Wash leeks, and chop into 3/8 inch slices. Add leeks to bowl. Mix together melted butter and oil. Drizzle most of the oil into the potatoes and leeks. Reserve 1 tablespoon of the oil mixture. Place coated leeks and potatoes onto a baking sheet. Spread potatoes and leeks out evenly. Sprinkle salt over the potatoes. Bake for 15 to 20 minutes.
While potatoes are baking clean and quarter mushrooms. Place mushrooms into empty bowl where the potatoes and leeks were in. Add chopped garlic to the mushrooms and drizzle with melted oil and butter. Add mushrooms and garlic to the potatoes and cook for an additional 10 to 15 minutes or until the potatoes begin to brown.