How to Make It
Preheat grill to medium-high (400°F to 450°F). Place baguette slices on unoiled grates; grill, uncovered, until charred on both sides, about 1 minute per side.
Stir together ricotta cheese, oil, zest, salt, and 1/4 teaspoon of the pepper in a bowl. Spread mixture evenly over baguette toasts. Top each with 2 peach slices. Divide prosciutto and basil evenly among toasts; sprinkle with remaining 1/4 teaspoon pepper.