"Create a beginner-friendly, quick and easy creamy rotini with ham and peas recipe using olive oil, unsmoked ham, dairy-free butter, shallots, salt and pepper, gluten-free rotini, peas, nutmeg, and a dairy-free parmesan cheese substitute. The user wants a substitute for heavy cream, so use a safe dairy-free alternative that fits a low-inflammation, minimal-processing preference and avoids gluten, dairy, nuts, shellfish, and corn. Keep it suitable for a household of 3 and use imperial units. Include clear ingredient amounts, simple steps, and note the heavy cream substitute in the recipe."