Louisville Hot Brown

This comes from my new cookbook Best of the Best from Kentucky. I made it for lunch today, and it was so good. I understand it's a fairly famous dish in Kentucky and that this is a simpler version than the usual two sauce one. I don't know about that, I just know I enjoyed it!

• Ready In: 20 mins
• Serves: 4

Ingredients

• 4  tablespoons butter
• 1  small onion, chopped
• 3  tablespoons flour
• 2  cups milk
• 1⁄2 teaspoon salt
• 1⁄4 teaspoon white pepper
• 1⁄4 cup  shredded cheddar cheese
• 1⁄4 cup  grated parmesan cheese
• 8  slices  toast
• 1  cooked chicken breasts or 1  cooked turkey breast, sliced
•  crisp-fried bacon, crumbled
•  sliced fresh mushrooms, sauteed

Directions

1. Saute onion in butter until transparent, add flour and cook stirring for 1 minute.
2. Add milk, salt and pepper and whisk until smooth.
3. Cook on medium heat until sauce thickens, stirring occasionally.
4. Add cheeses and continue heating until they blend.
5. Remove from heat.
6. Put one slice of toast in each of four oven-proof individual serving dishes (I used our 1980's stoneware dinner plates).
7. Top each piece of toast with slices of chicken or turkey.
8. Slice remaining toasts diagonally and place on sides of sandwiches.
9. Ladle cheese sauce over sandwiches.
10. Place sandwiches under broiler until sauce begins to bubble.
11. Garnish with crumbled bacon and sauteed mushroom slices and serve immediately.