Preheat the oven to 400°F (200°C).
Prepare the baguette slices on a baking sheet.
Drizzle the slices with olive oil and season.
Bake the bread for 10-12 minutes until golden and crisp.
While the crostini bake, prepare the cheese mixture.
In a mixing bowl, combine cream cheese, feta, garlic, olives, and parsley.
Season the mixture with salt and pepper, adjusting to taste.
Once the crostini are crisp, remove them from the oven and let cool slightly.
Spread the cheese mixture over the toasted crostini.
Return the crostini to the oven for 5-7 minutes, just until warmed.
Garnish with additional parsley if desired and serve immediately.