Step 1: Prepare the Sweet Potatoes

1. Preheat the Oven: Set your oven to 400°F (200°C).
2. Bake the Sweet Potatoes: Pierce each sweet potato several times with a fork. Place them on a lined baking sheet and bake for 45-60 minutes, or until they are soft and fork-tender.

Step 2: Make the Filling

1. Sauté the Mushrooms: In a large skillet, heat olive oil over medium heat. Add sliced mushrooms and cook for 5-7 minutes, stirring occasionally, until browned and tender.
2. Add Garlic & Spinach: Stir in minced garlic and cook for 1 minute. Then, add fresh spinach and cook until wilted, about 2-3 minutes.
3. Season the Filling: Stir in salt, black pepper, and dried oregano. Remove from heat.

Step 3: Stuff the Sweet Potatoes

1. Slice & Scoop: Once baked, remove the sweet potatoes from the oven and let them cool slightly. Cut them in half lengthwise and scoop out a small portion of the flesh to create a well for the filling.
2. Fill the Potatoes: Spoon the garlic mushroom and spinach mixture into each sweet potato half.
3. Top with Feta: Sprinkle with crumbled feta cheese.

Step 4: Final Baking

1. Return to the Oven: Place the stuffed sweet potatoes back on the baking sheet.
2. Bake Again: Bake for 10-15 minutes, until heated through and the feta cheese is slightly melted.

Step 5: Garnish & Serve

1. Add Fresh Herbs: Garnish with freshly chopped parsley for a burst of color and flavor.
2. Serve Warm: Enjoy immediately!