Asparagus & Prosciutto Toasts

Ingredients

• 1 pound asparagus (trimmed)
• 1 leeks (large, white and light green part only)
• 4 teaspoons olive oil (divided)
• 1 clove garlic (roughly chopped)
• 1/4 cup ricotta cheese
• 3 tablespoons lemon juice
• 2 teaspoons lemon zest (optional)
• salt
• pepper
• 1/2 pound prosciutto
• 1 loaf ciabatta (baguette, or other artisan loaf, sliced thinly)
• melted butter (or olive oil)