Potato and mushroom strudel

1. In large nonstick skillet, melt butter over medium heat; cook onion, garlic and mushrooms, stirring occasionally, for 5 minutes or until softened and liquid has evaporated.
2. Meanwhile, peel and cut potatoes into ¼-inch dice to make about 2-1/3 cups.
3. Add to pan along with 2 ts of the thyme; cook, stirring, for 2 minutes.
4. Add water; cover and cook for 8-10 minutes or until potatoes are tender and golden.
5. Remove pan from heat.
6. Stiri in parmesan cheese and green onion.
7. Seasoni with salt and pepper to taste.
8. Let cool.
9. Place 1 sheet of phyllo on work surface, keeping remaining phyllo covered with damp tea towel.
10. Brush sheet with some of the melted butter.
11. Layer remaining phyllo on top, brushing each sheet with butter.
12. Spoon potato mixture over phyllo, leaving 2-inch border along 1 long side and 1-inch border at each short end. Starting at other long side, carefully roll up jelly roll-style, folding in edges while rolling.
13. Place, seam side down, on greased baking sheet.
14. Brush with butter.
15. Bakei in 400f 200c oven for 18-20 minutes or until crisp and golden.
16. Let stand for 5 minutes.
17. Sprinkle with remaining thyme.
18. Slice diagonally with serrated knife.