Get ready to elevate your next cookout with this mouthwatering barbecued roast beef on a bun. This recipe combines the smoky flavors of the grill with the tangy sweetness of barbecue sauce, all nestled in a perfectly toasted bun. It's a simple yet delicious way to enjoy roast beef in a whole new light.
Most of the ingredients in this recipe are common pantry staples, but you might need to pick up some roast beef and barbecue sauce if you don't already have them on hand. Make sure to choose a high-quality roast beef for the best flavor, and select a barbecue sauce that suits your taste preferences, whether you like it sweet, spicy, or smoky.

Ingredients for Barbecued Roast Beef on a Bun
Roast beef: The star of the dish, providing a rich and savory flavor. Choose a high-quality cut for the best results.
Buns: These will hold your delicious beef and sauce. Opt for sturdy buns that can handle the juicy filling.
Barbecue sauce: Adds a tangy and sweet flavor to the beef. Pick a sauce that matches your taste preference.
Olive oil: Used to brush the beef, helping it to grill evenly and adding a subtle flavor.
Technique Tip for This Recipe
To ensure your roast beef is perfectly cooked, use a meat thermometer to check the internal temperature. For medium-rare, aim for 135°F, and for medium, aim for 145°F. This will help you achieve the desired doneness without overcooking.
Suggested Side Dishes
Alternative Ingredients
roast beef - Substitute with pulled pork: Pulled pork has a similar texture and can absorb barbecue sauce well, making it a great alternative.
roast beef - Substitute with grilled chicken: Grilled chicken is a leaner option and pairs nicely with barbecue sauce.
buns - Substitute with ciabatta rolls: Ciabatta rolls are sturdy and can hold up well to the juicy filling.
buns - Substitute with whole wheat buns: Whole wheat buns add a nutty flavor and are a healthier option.
barbecue sauce - Substitute with teriyaki sauce: Teriyaki sauce offers a sweet and savory flavor that complements the meat.
barbecue sauce - Substitute with honey mustard: Honey mustard provides a tangy and sweet alternative that pairs well with roast beef or other meats.
olive oil - Substitute with avocado oil: Avocado oil has a high smoke point and a mild flavor, making it a good substitute for olive oil.
olive oil - Substitute with canola oil: Canola oil is a neutral-flavored oil that works well for cooking and grilling.
Other Alternative Recipes Similar to This Dish
How to Store/Freeze This Dish
- Allow the roast beef to cool completely before storing. This prevents condensation, which can make the meat soggy.
- Slice the roast beef thinly and separate into individual portions. This makes it easier to reheat only what you need.
- Place the sliced beef in an airtight container or wrap tightly in aluminum foil. Ensure there is minimal air to prevent freezer burn.
- Store the barbecue sauce separately in a small airtight container. This keeps the sauce fresh and prevents the beef from becoming too soggy.
- For the buns, wrap each one individually in plastic wrap or aluminum foil. This helps maintain their texture and prevents them from drying out.
- Label each container with the date of storage. This helps you keep track of freshness and ensures you use the oldest items first.
- Store the roast beef and buns in the refrigerator if you plan to consume them within 3-4 days. For longer storage, place them in the freezer.
- When freezing, place the wrapped roast beef and buns in a freezer-safe bag or container. This provides an extra layer of protection against freezer burn.
- To reheat, thaw the roast beef and buns in the refrigerator overnight. This ensures even thawing and maintains the quality of the meat and bread.
- Reheat the roast beef in a skillet over medium heat, adding a bit of barbecue sauce to keep it moist. Alternatively, you can use a microwave, but be sure to cover the beef to retain moisture.
- Toast the buns in the oven or on a skillet until they are warm and slightly crispy. This revives their texture and enhances the overall sandwich experience.
- Assemble the sandwiches just before serving to maintain the best texture and flavor.
How to Reheat Leftovers
Oven Method:
- Preheat your oven to 350°F (175°C).
- Wrap the roast beef slices in aluminum foil, adding a splash of barbecue sauce to keep it moist.
- Place the wrapped beef on a baking sheet and heat for about 10-15 minutes, or until warmed through.
- For the buns, wrap them in foil and place them in the oven for the last 5 minutes of the beef reheating time.
Stovetop Method:
- Heat a skillet over medium heat and add a small amount of olive oil.
- Add the roast beef slices to the skillet, along with a bit of barbecue sauce.
- Stir occasionally and heat until the beef is warmed through, about 5-7 minutes.
- Toast the buns in a separate skillet or in the same skillet once the beef is done.
Microwave Method:
- Place the roast beef slices in a microwave-safe dish and add a little barbecue sauce to keep it moist.
- Cover the dish with a microwave-safe lid or plastic wrap, leaving a small vent.
- Microwave on medium power for 1-2 minutes, checking and stirring halfway through.
- For the buns, wrap them in a damp paper towel and microwave for about 15-20 seconds.
Grill Method:
- Preheat your grill to medium heat.
- Wrap the roast beef slices in aluminum foil with a bit of barbecue sauce.
- Place the foil packet on the grill and heat for about 5-10 minutes, turning occasionally.
- Toast the buns on the grill for the last 1-2 minutes of the beef reheating time.
Best Tools for This Recipe
Grill: Used to cook the roast beef to achieve a smoky, charred flavor.
Tongs: Essential for flipping the roast beef on the grill and handling the buns.
Basting brush: Used to brush olive oil onto the roast beef.
Meat thermometer: Helps ensure the roast beef reaches the desired doneness.
Cutting board: Provides a surface to let the beef rest and to slice it thinly.
Sharp knife: Necessary for slicing the roast beef thinly.
Mixing bowl: Used to toss the sliced beef with barbecue sauce.
Spatula: Handy for toasting the buns on the grill.
Serving platter: Ideal for assembling and serving the sandwiches.
How to Save Time on This Recipe
Pre-slice the beef: Ask your butcher to slice the roast beef thinly before you bring it home. This saves grilling and slicing time.
Use pre-made barbecue sauce: Opt for a high-quality barbecue sauce to cut down on preparation time.
Preheat the grill: Ensure your grill is preheated to medium-high heat before you start cooking to save time.
Toast buns in advance: Toast the buns while the beef is resting to streamline the process.
Marinate overnight: Marinate the roast beef in olive oil and seasoning the night before to enhance flavor and save time.

Barbecued Roast Beef on a Bun
Ingredients
Main Ingredients
- 1 lb Roast beef
- 4 Buns
- 1 cup Barbecue sauce
- 1 tablespoon Olive oil
Instructions
- Preheat the grill to medium-high heat.
- Brush the roast beef with olive oil and season with salt and pepper.
- Grill the roast beef for about 15 minutes on each side, or until desired doneness.
- Remove the beef from the grill and let it rest for 10 minutes.
- Slice the beef thinly and toss with barbecue sauce.
- Toast the buns on the grill for 1-2 minutes.
- Assemble the sandwiches by placing the beef on the buns. Serve immediately.
Nutritional Value
Keywords
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