Cook ziti package according to package directions.
Meanwhile, in a large frying pan, heat olive oil on medium heat. When hot, add garlic and simmer for 30 seconds. Add ground sausage and break into small pieces while cooking.
Combine cooked ziti with the sausage and spinach mixture and serve.
The preparation time is completed during the cook time in this recipe. The time to boil water is counted in the thirty minutes. Therefore, in the time it takes to boil the water and cook the pasta, the sausage mixture will be done cooking and ready to mix in with the cooked pasta.