Toast the baguette slices in a preheated oven (or on a skillet) until golden. Drizzle lightly with olive oil if desired.
In a small bowl, mix cream cheese with basil pesto until smooth.
Spread a thin layer of the pesto cream cheese on each crostini, then pipe additional cream cheese on top for a decorative swirl.
Place half a mozzarella ball and 2 halves of a cherry tomato on each crostini.
Drizzle with a touch of olive oil and season with salt and freshly cracked black pepper.
Garnish with microgreens and serve immediately.