Step 1
Preheat oven to 375 degrees F (190 degrees C).
Step 2
Cut 5 crosswise slices from center area of each eggplant about 1/2-inch thick to total 10 slices. Peel and dice remaining pieces of eggplant.
Step 3
Heat 2 tablespoons olive oil in a large skillet over medium-high heat until oil is very hot. Sprinkle eggplant slices lightly with a pinch of salt and cook in hot skillet in batches until slightly softened about 3 minutes per side. Set eggplant slices aside on paper towels.
Step 4
Heat 1 tablespoon olive oil in skillet and cook garlic for about 10 seconds; add diced eggplant and season with a pinch of salt and red pepper flakes. Saute until eggplant is softened about 5 minutes. Pour in marinara sauce and water. Turn heat to medium-low and cook until eggplant is tender about 15 minutes; stir occasionally. If sauce gets too thick add a little more water.
Step 5
Combine ricotta cheese 1/2 cup Parmesan cheese pepperjack cheese a pinch of salt and a pinch black pepper in a bowl until thoroughly combined. Spread about 2 tablespoons cheese mixture over each eggplant slice. Fold eggplant slices in half to enclose the cheese mixture.
Step 6
Spread about half the sauce into an 8x8-inch baking dish. Lay folded eggplant slices in a single layer into the dish. Spread remaining sauce over eggplant slices.
Step 7
Combine bread crumbs 1/2 cup Parmesan cheese and 2 tablespoons olive oil in a bowl; mix thoroughly. Spread crumb mixture over eggplant casserole.
Step 8
Bake in the preheated oven until casserole is bubbling and crumbs are browned 35 to 40 minutes.