Creating Stuffed Lasagna Portobellos is straightforward when you follow these simple steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Prepare Mushrooms: Gently remove the stems from the portobello mushrooms and scoop out the gills using a spoon. This will create a cavity for the filling.
3. Mix Filling: In a bowl, combine the ricotta cheese, half of the marinara sauce, Italian seasoning, minced garlic, salt, and pepper. Stir until smooth.
4. Stuff Mushrooms: Fill each mushroom cap generously with the ricotta mixture, ensuring they are well packed.
5. Add Sauce and Cheese: Top each stuffed mushroom with the remaining marinara sauce. Sprinkle shredded mozzarella and grated Parmesan on top.
6. Bake: Place the stuffed mushrooms on a baking sheet and bake for 25-30 minutes or until the cheese is bubbly and golden brown.
7. Garnish and Serve: Remove from the oven, garnish with fresh basil, and serve warm.

These steps will guide you in creating Stuffed Lasagna Portobellos effortlessly!