Wash the bell peppers, cut them in half lengthwise, and remove the seeds.
Place the bell pepper halves on a baking sheet and drizzle with olive oil.
Bake the bell peppers for 10–15 minutes while preparing the filling.
In a large pan over medium heat, sauté the sliced onions in olive oil until soft, about 3–4 minutes.
Add the minced garlic and cook for another 30 seconds.
Add the steak strips to the pan, season with salt and pepper, and cook until browned, about 5–7 minutes.
Stir in the mushrooms and cook for another 3 minutes until softened.
Remove the bell peppers from the oven and evenly distribute the steak, onion, and mushroom mixture into each pepper half.
Top each stuffed pepper with sliced banana peppers and a slice of provolone cheese.
Return to the oven and bake for another 5–10 minutes, or until the cheese is fully melted and bubbly.
Remove from the oven and serve immediately. Enjoy!
Notes
Protein Swap: Substitute steak strips with ground beef while maintaining high iron content.
Make it Spicier: Use hot banana peppers or add a pinch of red pepper flakes while cooking the steak.
Gestational diabetes carb count: for one full bell pepper with filling, 9 g of total carbs
Protein content: ~ 34 g of protein per serving (1 bell pepper)