01 -
Warm up the béchamel over low heat in a pot. Stir in the tomato paste gradually to get a smooth mixture. If you're using canned mushrooms, make sure to drain them first before adding them to the sauce. Mix everything well.
02 -
Melt the butter over medium heat in a large skillet. Toss in the frozen seafood mix and let it cook until it's tender. Chop the shallot finely and add that to the pan. Sprinkle in the salt and pepper to season.
03 -
Slowly pour in the white wine little by little, stirring continuously. Let it simmer a bit so the flavors intensify.
04 -
Pour the béchamel sauce into the skillet with the seafood. Gently mix everything together, giving all the ingredients a nice coating. Taste and tweak the seasoning if needed.
05 -
Spoon the mixture into small ramekins, glasses, or bowls—whatever you feel like. Serve it warm or at room temperature.