Preheat oven to 350°F. Spray a pie pan with cooking spray.
Peel and dice potatoes, then add to a microwave safe dish along with 1-2 tablespoons of water; cover, and microwave for 3-5 minutes until fork tender.
Chop onion, ham, and mushrooms.
Heat oil in a large skillet over medium; add onions and sauté for 5 minutes. Add the potatoes, ham, mushrooms, parsley, turmeric, salt, and pepper; stir to fully combine. Cook on low while preparing the eggs.
Whisk eggs together with milk and cheese. Scoop potato mixture into baking dish and pour eggs over the top. Place into oven and cook 12-15 minutes until eggs are set and golden brown on top. Remove from oven and allow to cool slightly before serving.
Slice bananas and serve on the side.