Preheat the oven to 375 degrees Fahrenheit.
Clean mushrooms and remove the stems. Then set aside.
Now, make the cashew cream by blending the cashews, water, garlic, lemon juice, nutritional yeast, and 1/2 teaspoon of salt and pepper on high until smooth. Transfer to mixing bowl.
Next, using a knife or food processor, finely chop the spinach and basil. Add to the bowl with the cashew cream.
Again, using a knife or food processor, finely chop the artichoke hearts. And add to the bowl with the cashew cream, spinach, and basil. Using a spoon, mix to combine. Add another 1/2 teaspoon of salt and pepper each or add to taste.
Using a small spoon, fill the centers of each baby bella with the spinach artichoke dip. Place on a parchment lined baking sheet and bake at 375 degrees Fahrenheit for about 15 minutes.
While the shrooms are in the oven, mix the panko breadcrumbs and truffle oil.
Once the mushrooms have been removed from the oven and have slightly cooled, top each with a heavy sprinkle of truffled breadcrumbs. Maybe garnish with some finely chopped fresh basil, serve, and ENJOY!