Preheat the oven to 400 degrees F. Arrange the slices of bread on a baking sheet.
Brush the toasts with olive oil, season with salt and bake at 400 degrees F for 5-7 minutes, flipping them over halfway, or until lightly golden brown. Allow to cool.
Place ricotta in a food processor. Process for about 30 seconds, or until smooth and creamy. Add in salt and pepper and stir the mixture with a spoon. [OPTIONAL TO ADD IN THE LEMON ZEST HERE, or sprinkle it on top for garnish.]
Assemble the crostini:
On the cooled crostini, spread the ricotta mixture with a spoon.
Top with a thin slice of red apple.
Sprinkle with roughly chopped roasted almonds and lemon zest.
Drizzle with honey.
Garnish with chopped basil leaves.
Finish with a sprinkling of sea salt.
Optional to serve the ricotta spread as a dip in a bowl: Add lemon zest, basil, sprinkle with nuts, and drizzle with honey and serve with favorite veggies or crackers.