Can I use fresh ravioli instead of frozen?
Yes, but reduce baking time by 5–10 minutes since fresh ravioli cooks faster. Check doneness at 20 minutes to avoid overcooking.
Do I need to brown the sausage before layering?
Yes. Brown and crumble the sausage with seasonings, then drain excess fat before mixing with marinara sauce.
Can I make this ahead?
Assemble the casserole up to 24 hours ahead, cover, and refrigerate. Add 10–15 minutes to bake time if cooking from cold.
What can I use instead of cream cheese?
Mascarpone or additional ricotta work well. Use the same amount and mix with sour cream for creaminess.
How do I know when it's done baking?
Bake until the cheese topping is golden brown and bubbling around the edges, typically 25–35 minutes at 350°F.