Step 1: Preheat your oven to 375°F (190°C).
Step 2: Carefully slice your bell peppers in half lengthwise, then scoop out all seeds and membranes.
Step 3: Toss the pepper halves with 1 tablespoon of olive oil. Arrange them cut-side up in a baking dish.
Step 4: Pop the peppers into the preheated oven for 15 minutes to soften them.
Step 5: While peppers pre-bake, wilt fresh spinach in a dry skillet. Once wilted, squeeze out all excess water and give it a rough chop.
Step 6: In a large bowl, combine ricotta, mozzarella, Parmesan, green onions, basil, parsley, rosemary, thyme, smashed fennel seed, salt, and pepper. Stir until beautifully combined.
Step 7: Pour the whisked eggs into the ricotta mixture and stir until fully incorporated.
Step 8: Gently fold in the chopped, wilted, and well-squeezed spinach.
Step 9: Generously spoon the creamy ricotta mixture into each pre-baked pepper half, mounding it up slightly.
Step 10: In a small separate bowl, mix the breadcrumbs with the remaining 1 tablespoon of oil.
Step 11: Sprinkle the oiled breadcrumbs evenly over the top of your stuffed peppers.
Step 12: Bake for an additional 25-30 minutes, or until the peppers are perfectly tender and the breadcrumb topping is a gorgeous golden brown.
Step 13: Once out of the oven, let your beautiful stuffed peppers rest for a few minutes before serving warm.