Ginger Ricotta Naan Toasts with Balsamic Figs & Lentils

16 2 naan flatbreads 1 Tbsp (15 mL) canola oil salt and ground black pepper, as needed for sprinkling 1 cup (250 mL) baby arugula –Figs & Lentils: ¾ cup (175 mL) dried figs, hard stems removed 1 Tbsp (15 mL) unsalted butter 3 Tbsp (45 mL) minced shallots or red onion ¼ tsp (1