Make the tapenade. To a small food processor, add all the tapenade ingredients (except the olive oil) and process until very finely chopped. Then, with the food processor running, drizzle in the olive oil to combine until a paste is formed.
Alternatively, you can follow the same process using an immersion blender and combining the ingredients in a bowl or you can finely chop everything using a chef’s knife. Finally, you can even use a pestle and mortar to crush the olives and make the tapenade old-school.
Whip the ricotta with a pinch of salt, a tablespoon of lemon juice, zest from half a lemon, and the thyme. Whisk it for a couple minutes until smooth and airy.
Make the crostini/toast. Slice the baguettes into 1/2-inch slices and brush each side with olive oil. Grill the bread slices for a couple of minutes on each side, on an electric grill, grill pan, or grill. Alternatively, bake the bread slices in the oven at 360°F (180°C) for about 10-12 minutes until crispy on the outside and slightly golden.
Assemble the crostini. Once the crostini have cooled down, spoon the whipped ricotta on the crostini and then the tapenade, dividing both of them equally among the crostini. Bring them to the table on a platter or lovely serving tray, and let your guests dig in!