01 - Preheat oven to 400°F. Grease a 9-inch pie dish with olive oil.
02 - Toss grated sweet potatoes with olive oil, salt, and pepper in a bowl. Press mixture evenly into bottom and up sides of prepared dish to form crust.
03 - Bake crust for 18–20 minutes until edges start to brown. Remove from oven and reduce temperature to 350°F.
04 - Heat olive oil in skillet over medium heat. Sauté onion and red bell pepper 4–5 minutes until softened. Add diced ham and cook 1 more minute. Remove from heat.
05 - Whisk together eggs, milk, cream, thyme, salt, and pepper in large bowl until well combined.
06 - Spread sautéed vegetables and ham over baked crust. Sprinkle grated cheese evenly on top.
07 - Pour egg mixture over filling.
08 - Bake 30–35 minutes until center is set and top is golden. Cool slightly before slicing and serving.