Preheat the oven to 180°C fan/200°C/400°F/Gas Mark 6.
Prepare the peppers: Halve the peppers from top to bottom, scoop out any seeds and pith then brush with a the olive oil.
Place the peppers in a baking dish and cook in the oven for 5 minutes until just starting to soften.
Make the filling: Meanwhile, stir the rice, black beans, sweetcorn, fajita seasoning, tomato salsa and half of the cheese together and season with some salt and pepper. Chop half of the coriander and stir that in too.
Time to stuff: Spoon into each of the pepper halves and then top with the remaining cheese.
A quick cook: Bake in the oven for 10-15 minutes until the cheese is melted and golden.
Scatter over the rest of the coriander and serve with guacamole and salad.
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