Low Carb Meaty Eggplant Lasagna

Ingredients:
2 eggplants (about 1 1/4 pounds each)
1/4 cup oil
salt
1 pound ground beef
salt & pepper to taste
2 cups marinara sauce
16 ounces whole milk mozzarella cheese, shredded
3/4 cup Parmesan cheese, grated

Instructions :
Trim the ends off of the eggplants. Peel them and slice lengthwise into 1/2" slices. You should get 6-8 long slices from each eggplant. Brush both sides of the eggplant slices with oil to coat. Place them in a single layer on a baking sheet (you may need to do them in two batches). Broil about 3-5 minutes per side until tender and a little browned. Watch them closely because they can burn quickly. Lightly sprinkle them with salt after removing from the oven. Brown the ground beef and season to taste with salt and pepper. Add the marinara sauce and heat through. Layer everything in a greased 9 x 13" baking dish in this order: 1/2 of the eggplant slices, 1/2 of the sauce mixture, 1/2 of the mozzarella. Repeat the layering one more time, and then sprinkle with the Parmesan cheese. Bake at 350º F. for about 30 minutes or until the cheese is bubbly.