Brush each side of the sourdough slices with a little olive oil, then put in the oven (straight on the shelf) for 6-8 minutes until lightly toasted.
Meanwhile, put half of the remaining oil in a nonstick pan over a medium heat. Add the bacon, asparagus and tomatoes. Cook them all for 5-8 minutes until the bacon is starting to crisp. Remove from the heat.
To serve, spread a tablespoon of soft cheese over each slice of sourdough. Top with the bacon and asparagus. Season with salt and pepper, and drizzle with the remaining olive oil. Serve with tomatoes on the side.