In a skillet, heat the olive oil over medium heat. Add the minced garlic and sauté for 1-2 minutes until fragrant.
Add the fresh spinach to the skillet and cook until wilted. Remove from heat and let it cool slightly.
In a mixing bowl, combine the ricotta cheese, cooked spinach, mozzarella cheese, Parmesan cheese, salt, and black pepper.
Cut the tops off the bell peppers and remove the seeds. Fill each pepper with the spinach and cheese mixture.
Place the stuffed peppers in a baking dish and cover with foil. Bake for 25 minutes, then remove the foil and bake for an additional 5-10 minutes until the peppers are tender.
Notes
These stuffed peppers can be made ahead of time and reheated when needed. Enjoy!