Brush the ciabatta slices on both sides with olive oil, then sprinkle both sides evenly with 1/4 cup of the sugar, gently rubbing it in.
Heat a large skillet over medium heat. Place the sugared bread in the skillet and cook until golden brown and caramelized on both sides, 2 minutes per side. Remove to a wire rack to cool briefly.
In a medium bowl, mix together the ricotta, vanilla and the remaining 1 tablespoon sugar with a rubber spatula. Divide the mixture among the toasts and spread evenly. Top with berries, drizzle with honey and sprinkle with flaky sea salt.