Created by QueenBea on November 18, 2011
Step 1: In pot of boiling water, cover and cook potatoes almost tender, 15 minutes.
Step 2: Drain and cool.
Step 3: Slice crosswise into 1/4 inch thick slices.
Step 4: In large pan, melt butter over medium heat.
Step 5: Add leek, cover and cook until tender, stirring occasionally about 4 to 7 minutes.
Step 6: Stir in flour, salt and pepper.
Step 7: Cook stirring for one minute.
Step 8: Slowly add milk and cook, stirring until evenly thickened, about 5 minutes.
Step 9: Gently add potato slices to coat, 1 at a time and then place each in a 8-inch glass casserole dish in rows.
Step 10: Spoon the remaining sauce over top of slices.
Step 11: Topping: Stir together bread crumbs, grated cheese and butter until crumbly.
Step 12: Sprinkle over potato slices.
Step 13: Bake at 425 degrees Fahrenheit until heated through, about 20 minutes.
Step 14: Broil until golden, about 3 minutes.