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 Open-Faced Roast Beef Sandwich?

You need 8 ingredients. The key ingredients include: 2 hoagie rolls, sliced and toasted, 8 teaspoons mayonnaise (use about 2 teaspoons per slice (or more), 4 -8 teaspoons coarse ground mustard (use about 1-2 teaspoons per slice or to taste), 1 lb thinly sliced cooked beef, and more.

Is Open-Faced Roast Beef Sandwich suitable as meat & poultry?

Yes, Open-Faced Roast Beef Sandwich falls under the Meat & Poultry category and is a great choice for this type of meal.

How do I store leftover Open-Faced Roast Beef Sandwich?

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

Open-Faced Roast Beef Sandwich Recipe

Name: Open-Faced Roast Beef Sandwich
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 hoagie rolls, sliced and toasted; 8 teaspoons mayonnaise (use about 2 teaspoons per slice (or more); 4 -8 teaspoons coarse ground mustard (use about 1-2 teaspoons per slice or to taste); 1 lb thinly sliced cooked beef; 1 large tomatoes, thinly sliced; thinly sliced red onion (use as much as desired); 4 -8 slices mozzarella cheese or 4 -8 slices provolone cheese; salt & freshly ground black pepper (to taste)

Try this homemade Open-Faced Roast Beef Sandwich recipe the whole family will love. Made with hoagie rolls, mayonnaise, ground mustard and beef. Easy st…

This Open-Faced Roast Beef Sandwich relies on simple, everyday ingredients such as thinly sliced cooked beef. It comes together quickly and makes 4 servings, at about 702 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

Servings: persons

2 hoagie rolls, sliced and toasted
8 teaspoons mayonnaise (use about 2 teaspoons per slice (or more)
4 -8 teaspoons coarse ground mustard (use about 1-2 teaspoons per slice or to taste)
1 lb thinly sliced cooked beef
1 large tomatoes, thinly sliced
thinly sliced red onion (use as much as desired)
4 -8 slices mozzarella cheese or 4 -8 slices provolone cheese
salt & freshly ground black pepper (to taste)

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Quick Info

Servings
4 servings
Calories
702 kcal
Category
Meat & Poultry

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