Heat 1 tbsp of oil in a large skillet over medium heat.
Add onions, peppers, and mushrooms. Cook until softened, about 3–4 minutes.
Add the sliced steak. Cook until browned and fully cooked through.
Season with salt and pepper.
Stir in the cheese until melted and well mixed. Let it cool slightly.
- Assemble the Egg Rolls
Place one egg roll wrapper on a flat surface, with a corner facing you.
Spoon 2–3 tablespoons of the filling into the center.
Fold the bottom corner over the filling, then fold in the sides and roll tightly.
Seal the edge with a bit of water.
- Fry
Heat oil in a deep pan to 350°F (175°C).
Fry egg rolls 2–3 at a time until golden brown and crispy (about 3–4 minutes each side).
Drain on paper towels.
- Serve
Slice diagonally and serve hot with cheese sauce, ranch, or spicy mayo for dipping
