Prepare stuffing. In a nonstick pan, pour oil and sweat shallot and leeks for 3 minutes. Add pesto and basil, salt and pepper, then mix. Remove from heat and let cool down at room temperature.
Combine ricotta and Parmesan. Put in an airtight bag. Set aside in refrigerator.
Set eggplant slices on a baking sheet covered with parchment paper. Salt both sides. Leave 5 to 10 minutes. Wipe eggplant slices well. Brush with olive oil. Salt and pepper. Cook eggplant on broil over the middle grill for 3 to 4 minutes each side. Set aside.
Set oyster mushrooms brushed with oil on a plate and broil 1 to 2 minutes each side. Salt and pepper. Set aside.
On a plate, set 1 eggplant slice and garnish with ricotta stuffing. Add 1 or 2 oyster mushrooms and cover with 1 eggplant slice. Repeat again. Spray with olive oil, then garnish with basil and pine nuts.
Chef’s note
Heat a baguette bread in the oven few minutes, then garnish with eggplant leftovers, some crispy lettuce and fresh coriander. A perfect sandwich!