Preheat oven to 425 degrees.
On a rimmed quarter baking sheet, combined frozen cauliflower gnocchi, pieces of sausage removed from casing, garlic cloves, and shallots . Drizzle ingredients with olive oil and season with garlic powder, onion powder, and salt and pepper.
Roast in the oven for about 30 minutes, tossing all of the ingredients with a large spatula 1-2 times to ensure even cooking.
During the last 5 minutes of cooking, add spinach and white beans and red pepper flakes to the sheet pan and finish cooking until spinach begins to wilt.
Remove from oven and toss to combine everything on the sheet pan. Garnish with parmesan cheese and an additional drizzle of olive oil if desired, serve immediately.