Crostini borrow their topping of kale, white beans, and pork from a traditional Tuscan soup.
Whisk together 2 tablespoons oil, the vinegar, 1/4 teaspoon salt, and pepper to taste. Add beans, and toss to coat.
Arrange prosciutto in a single layer in a large saute pan. Cook over medium-high heat, turning occasionally, until golden and crisp, about 5 minutes. Drain on paper towels.
Add remaining tablespoon oil, the garlic, and red-pepper flakes to pan, and cook over medium heat for 1 minute. Add wine and kale. Cover and cook, stirring once, until wilted. Stir in bean mixture and prosciutto, and season with salt and pepper. Spoon onto baguette slices, and drizzle with oil.