Pour some oil into a hot pan and fry the onions, add the garlic and fry a little more. Now put the curry paste in the pan and roast a little. Then sprinkle in the ground cumin, coriander and turmeric, roast a little and pour the coconut milk on top, simmer slowly until the sauce thickens and the onions are cooked through. Season the sauce to taste and, if necessary, season with salt and pepper and also chili powder - if you like it.
Heat the grill pan, coat a thin layer of oil and slowly fry the fillet slices until the desired cooking point is reached.
Roast the toast, place it on a plate and arrange the lettuce leaves on top. Now place the fillet slices on top, pour the sauce over them and garnish with a few beautiful coriander leaves.
The spiciness varies depending on the curry paste used, you can use less or more.