How to Make It
Heat oven to 400° F. Place the baguette slices on a baking sheet and brush both sides of the bread with oil. Bake until golden brown, 4 to 5 minutes per side. Set aside.
In a bowl, toss the grapes with 2 tablespoons oil, rosemary, and a generous sprinkle of a salt and pepper. Spread mixture on rimmed baking sheet lined with parchment paper. Roast for about 25 minutes, until the grapes have split and softened and released their juices. Transfer grapes and juices to a small bowl.
Dividing evenly, spread the toasted baguette slices with the ricotta and a small scoop of grapes. Garnish each with a drizzle of olive oil and a pinch of salt and pepper and serve.