Toast the Bread: Preheat oven to 400°F (200°C). Lightly brush baguette slices with olive oil and place on a baking sheet. Toast for 7–10 minutes until golden and crisp.
Whip the Ricotta: In a bowl, stir together ricotta with lemon zest, a pinch of salt, and black pepper until light and fluffy.
Assemble the Bruschetta: Spread a generous layer of ricotta on each slice. Top with a spoonful of diced tomatoes and 2–3 blueberries.
Finish with Herbs & Garnish: Sprinkle with chopped basil and, if desired, a light drizzle of balsamic glaze.
Serve Immediately: Best served slightly warm or room temp to enhance flavor and texture.