Start by slicing your baguette into about 12 pieces, roughly ½ inch thick. Lay them on a baking sheet and toast them in a preheated oven at 350°F (175°C) for just 5 minutes, until they are lightly golden and perfectly crisp.
While your bread is toasting, finely chop your fresh strawberries until you have ½ cup. If your strawberries are particularly juicy, you can gently blot them with a paper towel to avoid watering down the sauce later.
In a small saucepan, combine 4 tablespoons of balsamic vinegar and 2 teaspoons of brown sugar. Heat this mixture over medium heat, stirring occasionally, for 6-8 minutes. It will gently reduce and thicken into a lovely, sweet glaze.
While the glaze is simmering, grate 1 teaspoon of fresh lemon zest.
Carefully pour the warm balsamic glaze into a small bowl with your chopped strawberries and lemon zest. Gently stir everything together until the strawberries are well coated.
Spread a small dollop of creamy ricotta cheese onto each toasted baguette slice.
Spoon a generous amount of the delicious balsamic strawberry mixture over the ricotta on each crostini. Serve these beautiful bites immediately for the best taste and texture!