LAYERED VEGETABLE CASSEROLE

Steps:

• Peel potatoes, cut in half.
• Place in a large saucepan and cover with boiling or hot water.
• Cover saucepan and bring back to the boil.
• Reduce heat to medium and continue boiling gently, partially covered, until potatoes are very tender, about 20 to 30 minutes.
• Drain potatoes and mash.
• Stir in 2 TBS butter, sour cream and 1/2 tsp salt.
• You should have about 6 cups.
• Squeeze handfuls of spinach until fairly dry.
• Coarsely chop if not already chopped.
• Place in a medium size bowl.
• Stir in onions, egg,1 TBS butter and 1/4 tsp salt.
• Drain off any liquid from thawed squash.
• Stir squash with 1 TBS butter, ginger and 1/4 tsp salt.
• Preheat oven to 350*F.
• Butter a large caserole dish that will hold at least 8 cups or coat with cooking spray.
• Spoon one third of the potato mixture into buttered dish and spread til smooth.
• Evenly spread with all of the squash mixture.
• Spread with half of remaining potatoes, then all of spinach mixture.
• Top with a layer of remaining potatoes, then sprinkle with cheese.
• Bake uncovered, in center of oven until hot and cheese is lightly golden, from 55 to 65 minutes.
• To test if hot right through, plunge a table knife into center of casserole and hold for 15 seconds.
• Then withdraw knife and lightly touch to see if it has become very warm.