Open Faced Turkey Burgers and using leftovers

Last night I made steak fajitas and had leftover veggies (onions, bell peppers, mushrooms and jalapeno).  I chopped the leftovers up today in small pieces and added them to a pound of turkey meat along with some S&P and Worcestershire sauce.  It made 5 large patties.  I sliced two thick slices of my homemade sourdough bread "Sour Sam" from the class I took in the SF, toasted it, topped it with the cooked burger, some horseradish mashed potatoes, brown gravy and wha la, dinner was served.  The concept came from today's repeat Rachael Ray show, she called it Shepherds Pie Knife & Fork Burgers.
This dish was a bit heavy for this hot summer day but I served it with a cucumber, jicama, red bell pepper salad with last nights Daphne Oz's Chipotle sauce and it worked out well.  I didn't like the sauce she made on my fajitas, too sweet but it made a better salad dressing and sitting overnight brought out the spice more.

SHEPHERDS FAJITA BURGER

5 slices of thick sourdough bread 1 lb. ground turkey
1 ½ C. chopped cooked fajita veggies, chopped (onion, red bell pepper, jalapeno, mushrooms)
2 T. Worcestershire
½ t. coarse black pepper
¼ t. Kosher salt
Horseradish Mashed Potatoes
3 russet potatoes
2 red potatoes
1 T. unsalted butter
3 T. Greek yogurt
1 T. cream horseradish
¼ t. coarse black pepper
¼ t. Kosher salt
¼ C. Nonfat milk

Gravy

2 T. unsalted butter

2 T. flour
10 ½ oz. can beef consumme

Peal and cube potatoes. Add to a large pot of cold water and bring to a boil. Cook till potatoes are soft. Drain. Add back to hot pot. Add butter and mash. When butter is melted add yogurt, horseradish, pepper and salt. Mix. Then add enough milk to make it creamy. Chop veggies into tiny pieces and add to ground turkey with Worcestershire sauce, pepper and salt. Mix. Form into 5 patties, shaping into the form of your bread. Drizzle a grill pan with EVOO, heat and add patties to hot pan, cooking 5-6 minutes per side. While burgers are cooking begin gravy. Add butter to a small skillet and melt. Add flour and cook for 2 minutes. Add beef consume stirring constantly to get rid of any lumps. Cook to thicken, about 3 minutes. Toast bread. Top with burger, a scoop of mashed potatoes and flatten to resemble patty shape. Place under broiler to warm/brown about 3-5 minutes. Remove from oven and top with gravy.