For a richer flavor, use olive oil-packed tuna. Feel free to add other vegetables like peas, carrots, or bell peppers. If you don't have Monterey Jack cheese, Cheddar or Gruyere would also work well. To prevent the zucchini from becoming too soft, you can lightly sauté it before adding it to the casserole. This casserole can be assembled ahead of time and stored in the refrigerator for up to 24 hours before baking. Add 10-15 minutes to the baking time if baking from cold.
Mikel Lueilwitz
Feb 22, 2025I used gluten-free pasta and it worked perfectly! So happy to have a gluten-free comfort food option.
Kenton Nienow
Dec 16, 2024My kids who hate tuna actually ate this casserole! The zucchini was a great addition.
Geraldine Schultzemmerich
Oct 17, 2024This is now a family favorite! Easy to make and so much better than the canned soup version.
Shanna Klocko
Jul 12, 2024So easy to make after work. Definitely a regular meal now!
Crystal Sipes
Jan 11, 2024I added a can of cream of mushroom soup to the sauce and it was extra creamy and delicious.
Cassie Kulas
Jul 28, 2022I thought the mustard was a bit too strong, so I reduced it to 1 teaspoon next time.