How to Make It
Preheat the oven to 350° and lightly brush a baking sheet with olive oil. Using a 2-inch round biscuit cutter, stamp 4 rounds out of each slice of bread and transfer to the baking sheet. Lightly brush the rounds with oil and toast for about 15 minutes, until lightly golden and slightly crisp.
Meanwhile, in a medium skillet, heat the 2 tablespoons of olive oil. Add the asparagus, season with salt and pepper and cook over high heat, stirring occasionally, until crisp-tender, about 1 minute. Add the lemon juice and let cool slightly.
In a small bowl, stir the lemon zest into the ricotta and season with salt and pepper. Spread the lemon ricotta on the toasts and top with the asparagus. Drizzle with oil and sprinkle with salt. Serve right away.