INGREDIENTS

1. 1/2cupmayonnaise
2. 2tablespoonsall-purpose flour
3. 1/2teaspoonsalt
4. 1/8teaspoonpepper
5. 1 1/2cupsmilk
6. 1cup shreddedsharp cheddar cheese
7. 1teaspoon choppedfresh parsley
8. 1teaspoon choppedfresh chives
9. 1teaspoon choppedfresh thyme
10. 4cups thinly slicedbaking potatoes(about 4 large)
11. 2tablespoons gratedparmesan cheese

DIRECTIONS

1. Combine 1/2 cup mayonnaise and next 3 ingredients in a saucepan.
2. Gradually add milk, and cook, stirring constantly, over medium-low heat 8 to 10 minutes or until thickened.
3. Remove from heat.
4. Add Cheddar cheese and next 3 ingredients, stirring until cheese melts and is well blended.
5. Place half of potato slices evenly in a lightly greased 11- x 7-inch baking dish; pour half of cheese mixture over potatoes. Repeat layers with remaining half of potato slices and cheese mixture.
6. Sprinkle evenly with Parmesan cheese.
7. Bake, covered, at 350° for 1 hour.
8. Uncover and bake 30 more minutes or until potatoes are golden brown and fork tender.