In a bowl combine flour, paprika, salt, and ¼ tsp pepper and mix everything well.
Dip the chicken breast in the dry flour mixture and dust off the excess.
Heat up a pan, add about 1 tbsp of butter and add the chicken breast to it. Cook till it is golden and then flip and repeat again. Remove & keep covered until ready to serve.
In the same pan add 1 tbsp of butter, ½ tsp of minced garlic, and onion, and cook till the onions become translucent, add salt as per taste. Add ¼ tsp of pepper and check for seasoning. Add in the chopped spinach and cook till the spinach is cooked well.
For the sauce use a small sauce pan, add the butter, onions, garlic, salt, and some pepper. Cook till the onions are translucent and add the milk and the cheese, Cook till the cheese is evenly melted.
For assembly, take a plate, add the spinach first, place the cooked chicken breast on top of it. And top it up with the prepared sauce.