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 Meatball Sub Sandwich (Or Mini Meatloaves)?

You need 16 ingredients. The key ingredients include: submarine sandwich bun, 1 1/4 cups bread, from buns (see recipe), 1 1/2 lbs ground beef, 1 egg, and more.

Is Meatball Sub Sandwich (Or Mini Meatloaves) suitable as meat & poultry?

Yes, Meatball Sub Sandwich (Or Mini Meatloaves) falls under the Meat & Poultry category and is a great choice for this type of meal.

How do I store leftover Meatball Sub Sandwich (Or Mini Meatloaves)?

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

Meatball Sub Sandwich (Or Mini Meatloaves) Recipe

Name: Meatball Sub Sandwich (Or Mini Meatloaves)
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: submarine sandwich bun; 1 1/4 cups bread, from buns (see recipe); 1 1/2 lbs ground beef; 1 egg; 1/4 cup milk; 1 tablespoon diced onion; 1 teaspoon salt; 1/4 teaspoon pepper; 2 tablespoons oil, divided; 2 medium green peppers, diced or julienned; 1 medium onion, sliced; 1 tablespoon flour; 1 (12 ounce) bottle chili sauce; 1 cup water; 1 tablespoon brown sugar; 1 teaspoon ground mustard

Try this homemade Meatball Sub Sandwich (Or Mini Meatloaves) recipe the whole family will love. Made with submarine sandwich, bread, ground beef and egg…

This Meatball Sub Sandwich (Or Mini Meatloaves) relies on simple, everyday ingredients such as submarine sandwich bun, ground beef, egg and milk. It comes together quickly and makes 4 servings, at about 594 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 Meat & Poultry

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

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.

My Personal Notes

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Meatball Sub Sandwich (Or Mini Meatloaves)

Tips for the best results

Variations & substitutions

My Personal Notes

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Frequently Asked Questions