Slice your fully cooked sausages into 1 inch rounds.
On a sheet pan toss the frozen broccoli, gnocchi, and sliced fully cooked sausages together. Generously coat with olive oil. (at least 1/4 cup) Ensuring each piece is coated.
Squeeze the juice of half a lemon, 1 tsp of salt, 1 tsp of pepper, and crushed red pepper to taste over the mixture.Toss to combine ensuring the oil and seasonings are even.
Cook for 25 minutes. Take out of oven halfway through and toss to move around. When everything is roasted ,take out of the oven and pour the butter sauce on top. Toss to combine and serve.