Preheat the oven to 400 degrees F.
Arrange the slices of bread on a baking sheet. Drizzle one side with olive oil. Flip the slices over and drizzle the other side with oil.
Bake the bread for 5-7 minutes, flipping halfway through.
Place ricotta into a food processor. Process for about 30 seconds or until smooth and creamy.
Place mixture into a bowl and gently stir in salt and pepper.
To assemble the crostini, place the whipped ricotta into a Ziploc bag. Close the top of the bag and snip the bottom corner with a scissor to create a piping bag or use a piping bag if you have one.
Pipe the ricotta onto the crostini and top with lemon zest, thyme leaves, and pistachios. Drizzle honey on top and serve.