To make pumpkin purée: One small Ontario Pie Pumpkin weighing about 2-1/2 lb (1.25 kg) will yield about 3 cups (750 mL) purée, or enough for 2 pies.
Cut washed and seeded pumpkin into chunks and place in large pot with 2 inches (5 cm) water. Cover and steam over medium heat until tender, about 15 minutes, adding more water to maintain level if required. Let cool; drain well and purée in blender with skin on. Freeze leftover purée in 1-1/2 cup (375 mL) measures for using later.
