Preheat oven to 375°F.
Arrange baguette slices on a baking sheet and brush with olive oil.
Toast in the oven for 7–10 minutes until golden and crisp.
Spread a spoonful of ricotta on each crostini.
Add a small dollop of pesto over the ricotta.
Top with halved cherry tomatoes.
Sprinkle with salt and pepper, garnish with basil, and serve immediately.