All done with turkey? Why not make tacos - then make a Mexican lasagna with the left overs for another night.
Layer beef, tortillas (corn or flour soft tortillas), diced tomatoes, and cheese just like a regular lasagna in a large 9x13 pan (or 9x9 if you don't have that many left overs). Bake until hot and bubbly and nicely toasty on top at 350 or so (maybe about 45 mins). It got nice and crispy cheesy on top.
Serve with sour cream on top. Yum!