How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Tip Top Tuna Casserole?

You need 12 ingredients. The key ingredients include: 1/4 c. butter, 1/2 c. chopped onion, 1 c. chopped green pepper, 2 Tbsp. all-purpose flour, and more.

Is Tip Top Tuna Casserole suitable as seafood?

Yes, Tip Top Tuna Casserole falls under the Seafood category and is a great choice for this type of meal.

How do I store leftover Tip Top Tuna Casserole?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Tip Top Tuna Casserole Recipe

Name: Tip Top Tuna Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1/4 c. butter; 1/2 c. chopped onion; 1 c. chopped green pepper; 2 Tbsp. all-purpose flour; 1 (1 lb. 13 oz.) can tomatoes; 1 Tbsp. Worcestershire sauce; 1 tsp. dry mustard; 1/2 tsp. salt; 1/2 tsp. sugar; 1/4 tsp. pepper; 2 (6 1/2 oz.) cans tuna; 1 (8 oz.) can refrigerated buttermilk biscuits

Try this homemade Tip Top Tuna Casserole recipe the whole family will love. Made with butter, onion, green pepper and flour. Easy step-by-step instructi…

This Tip Top Tuna Casserole relies on simple, everyday ingredients such as butter, chopped onion, chopped green pepper and all-purpose flour. It comes together quickly and makes 4 servings, at about 413 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Seafood

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

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Tip Top Tuna Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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