Soak the cashews. Soak the cashews in a small bowl of boiling water for 10 minutes. Set aside.
Prepare the tomato mixture. Cut the tomatoes into small pieces, about 1/4-inch, and place in a mixing bowl. Sprinkle with a pinch of kosher salt and a crack of freshly ground black pepper. Stir and let them sit for 5 minutes. The salt helps draw out excess moisture and intensify the flavor.
Chill. Stir in 1 tablespoon of olive oil and torn basil leaves. Season to taste with more salt and pepper as needed. Chill for 15 minutes to allow the flavors to further develop.
Make the creamy base. Drain and rinse the cashews then add them to the base of a high-powered blender with fresh water, Italian seasoning, kosher salt, garlic powder, onion powder, dried parsley, freshly ground black pepper, and red wine vinegar. Blend on high until completely smooth. Season to taste with more salt as needed.
Combine. Spread the savory cashew cream onto the bottom of a shallow bowl. Sprinkle the tomato topping in an even layer on top. Add a drizzle of olive oil and a light drizzle of balsamic glaze.
Serve. Serve with toasted baguette slices rubbed with a clove of fresh garlic, pita chips, or crackers.