Preheat Oven: Preheat your oven to 375°F (190°C). Grease a 12-cup muffin tin with cooking spray or lightly brush with olive oil.
- Prepare Sweet Potatoes: Place the grated sweet potatoes in a clean kitchen towel or cheesecloth and squeeze out excess moisture.
- Season Sweet Potatoes: In a bowl, combine the grated sweet potatoes with olive oil, salt, and pepper. Press the mixture evenly into the bottom and up the sides of each muffin cup to form a nest.
- Bake Sweet Potato Cups: Bake in the preheated oven for 15 minutes, or until the edges are golden brown.
- Prepare Egg Mixture: While the sweet potato cups are baking, whisk together the eggs, shredded cheese, diced onion, and diced bell pepper in a bowl. Season with salt and pepper.
- Assemble Egg Cups: Remove the muffin tin from the oven. Pour the egg mixture evenly into each sweet potato cup, filling them almost to the top.
- Bake Egg Cups: Return the muffin tin to the oven and bake for an additional 15–20 minutes, or until the eggs are set and lightly browned on top.
- Cool and Serve: Allow the egg cups to cool for a few minutes before removing them from the muffin tin. Serve warm, garnished with optional toppings like fresh herbs or a drizzle of hot sauce.