Creating Feta Spinach Stuffed French Bread is simple if you follow these steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Prepare the Bread: Slice the French bread in half lengthwise. Hollow out the center of each half to create space for the filling. Set aside the removed bread for later use or other recipes.
3. Sauté the Spinach: In a large skillet, heat the olive oil over medium heat. Add the minced garlic and sauté for about 1 minute until fragrant. Add the chopped spinach and cook until wilted, about 2-3 minutes. Remove from heat.
4. Mix the Filling: In a bowl, combine the sautéed spinach, crumbled feta cheese, cream cheese, shredded mozzarella cheese, dried oregano, salt, and pepper. Mix until well combined.
5. Stuff the Bread: Spoon the filling mixture into the hollowed-out French bread halves, packing it in tightly.
6. Brush with Egg Wash: Brush the tops of the stuffed bread with the beaten egg to give it a golden color while baking.
7. Bake: Place the stuffed bread halves on a baking sheet and bake in the preheated oven for 30-35 minutes, or until the bread is golden and crispy.
8. Cool Slightly: Remove from the oven and allow to cool for a few minutes before slicing.
9. Slice and Serve: Cut the stuffed French bread into pieces and serve warm.

Following these steps will help you create a delicious Feta Spinach Stuffed French Bread that is sure to impress.