Preheat your oven to 400°F (200°C). Line a rimmed baking sheet with parchment paper. This prevents the strawberry juices from sticking and burning.
Place the hulled and halved strawberries on the prepared baking sheet. Drizzle with 1 tablespoon honey, the balsamic vinegar, and 1/2 teaspoon vanilla extract. Toss gently to coat every piece evenly.
Checkpoint: You are ready to move on when all strawberries look lightly coated and glossy.
Spread the strawberries in a single layer, cut side up. Roast on the center rack for 20–25 minutes until they are very soft, slightly shrunken, and surrounded by a thick, bubbly syrup. They should smell deeply sweet and jammy.
Checkpoint: You are ready to move on when the syrup around the strawberries has thickened and the edges of the fruit look caramelized.
Remove the strawberries from the oven and let them cool on the pan for at least 10 minutes. They will continue to thicken as they cool. Do not skip this resting time or the topping will be too runny.
While the strawberries roast, make the whipped ricotta. Add the whole-milk ricotta, softened cream cheese, powdered sugar, lemon zest, and remaining 1/2 teaspoon vanilla extract to a food processor or blender.
Process on high for 60–90 seconds, stopping once to scrape down the sides, until the mixture is completely smooth, light, and fluffy — it should look almost like thick whipped cream.
Checkpoint: You are ready to move on when no lumps remain and the ricotta has a silky, spreadable texture.
Heat a large skillet or grill pan over medium heat. Spread about 1/2 tablespoon of softened butter on each side of the sourdough slices.
Place the buttered bread in the hot pan. Toast for 2–3 minutes per side until each side is deep golden brown and the bread feels crisp when you press it lightly. Adjust heat to medium-low if it browns too fast.
Checkpoint: You are ready to move on when both sides are evenly golden and the toast sounds hollow when tapped.
Place the toasted sourdough slices on a serving board or individual plates. Spoon a generous heap (about 3–4 tablespoons) of whipped ricotta onto each slice and use the back of the spoon to spread it almost to the edges.
Spoon the roasted strawberries and all of their syrupy juices evenly over the ricotta on each toast. Do not discard the syrup — it is the best part.
Scatter the thinly sliced fresh basil leaves and toasted pine nuts over each toast. Drizzle lightly with extra honey and finish with a small pinch of flaky sea salt. Serve immediately.