Step 1

Preheat oven to 400 F. Cut green peppers in half and de-seed them. Drizzle with 1 tbsp olive oil, season with salt and pepper and bake in a 9x13 dish covered with tin foil for 10 minutes.

Step 2

Add remaining 1 tbsp of olive oil to a large frying pan and heat over high heat until oil is smoking. Add steak, season with salt & pepper, then sear for 1 minute per side. Remove from heat and slice very thinly across the grain when cool enough to handle.

Step 3

In same skillet, add mushrooms and cook until they start to release juices. Add onions and red pepper, sauteeing for 2-3 minutes until tender and seasoning with salt and pepper.

Step 4

Meanwhile, remove green peppers from oven. Divide steak slices and veggies among peppers then top with cheese. Bake for 15 minutes or until cheese is melted. Remove and serve!