Roast the tomatoes: Preheat oven to 275°F (135°C). Line a baking sheet with parchment. Toss halved cherry tomatoes with olive oil, salt, thyme, and sugar. Roast for 1.5 to 2 hours until jammy and caramelized.⏱ 105 min
Prep the zucchini: Lay sliced zucchini on a tray, sprinkle with salt, and let rest for 15 minutes to draw out moisture. Pat dry with a clean towel.⏱ 15 min
Grill the zucchini: Brush slices lightly with olive oil and grill over medium-high heat for 2-3 minutes per side until tender and lightly charred. Set aside to cool slightly.
Make the ricotta filling: In a small bowl, mix the ricotta with lemon zest, juice, olive oil, basil, salt, and pepper until smooth and spreadable.
Assemble the rollups: Spread 1 teaspoon of ricotta on each zucchini strip. Add 1-2 roasted tomato halves. Roll up tightly and place seam-side down on a platter.
Serve immediately.