Step 1

Heat the oven to 190C/170C Fan/Gas Brush the mushrooms with 1 tablespoon of the olive oil and place, cap side up, on a baking tray. Bake for 20 minutes until beginning to soften.

Step 2

Meanwhile, heat the remaining oil in a frying pan. Add the onion and mushroom stems and cook for 3 minutes until beginning to soften. Add the garlic and spinach and season with salt and pepper. Cook over a medium heat until the spinach has wilted. Increase the heat and cook until all the liquid in the pan has evaporated. Remove from the heat.

Step 3

Spoon the goats' cheese, red peppers and half of the Cheddar into a bowl. Add the cooked spinach mix and combine. Season with salt, pepper and a squeeze of lemon juice, if using.

Step 4

Remove the mushrooms from the oven, turn them over and divide the filling between each one. Sprinkle the remaining Cheddar over the top.

Step 5

Return to the oven and bake for a further 15 minutes, until the mushrooms are tender and the cheese is golden.