Prawns, pasta (linguini is good), bunch of spring onions, garlic, spinach, cherry tomatoes, chilli, splash or two if white wine, lemon zest (and juice if needed) seasoning.
While pasta is cooking gently fry chopped spring onions and garlic in a little olive oil, add a handful of chopped tomatoes, chilli and wine. Let it bubble for a couple of minutes add spinach (I add lots!) prawns and lemon zest and juice, season well. Drain pasta and add to prawn mix and combine thoroughly. Fifteen minutes from start to finish.
I’ve no idea what the calorie count is but it is very tasty.