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15-Minute Roast Beef Dip Sandwiches with Purple Sweet Potato Fries | The Butter Half

15-Minute Roast Beef Dip Sandwiches with Purple Sweet Potato Fries

You better beef adding these 15-minute roast beef dip sandwiches with purple sweet potato fries to your dinner menu. They are quick, fresh, and healthy. A perfectly easy family dinner.
Course Main Course
Cuisine American
Keyword kid-friendly recipes, sandwiches, weeknight dinner
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 25 minutes
Servings 4 servings
Calories 456kcal


Roast Beef Sandwiches:

  • 4 hoagie rolls
  • 1 tablespoon olive oil
  • 1 green pepper sliced
  • ½ red onion sliced
  • ½ pound sliced deli roast beef
  • 4 slices provolone cheese
  • Salt and pepper to taste

Au Jus Dip:

  • 2 cups beef broth
  • 1 tablespoon soy sauce
  • ½ teaspoon salt
  • ¼ teaspoon garlic powder
  • ¼ teaspoon pepper

Roasted Purple Sweet Potato Fries:

  • 2-3 large purple sweet potatoes julienned
  • 2 tablespoons olive oil
  • Salt and pepper


  • Preheat oven to 450°F.
  • Place the hoagie rolls face down on a parchment lined baking sheet. Spread out julienned purple sweet potatoes (cut to ¼ inch thickness) on another parchment lined baking sheet, and drizzle with olive oil, salt, and pepper. Toast the rolls for 5 minutes, and roast the sweet potato fries for 25 minutes. (Note that the thinner fries are cut, the crispier they will turn out.)
  • In a skillet, grill the peppers and onions in olive oil on medium high heat, about 5 minutes. When slightly charred and tender, remove and set aside.
  • Flip the hoagie rolls and layer meat and one slice of provolone on each sandwich. Bake for another 5-7 minutes until cheese is melted and bubbling, and the bun is toasted.
  • While sandwiches and fries are baking, prepare the au jus dip. In a small saucepan, whisk together beef broth, soy sauce, salt, garlic powder, and pepper. Heat over medium high heat, about 5 minutes, until warm.
  • Top the baked sandwiches with grilled peppers and onion. Serve with ½ cup au jus dip and a side of fries. Enjoy!


Calories: 456kcal | Carbohydrates: 36g | Protein: 27g | Fat: 22g | Saturated Fat: 7g | Cholesterol: 51mg | Sodium: 2381mg | Potassium: 343mg | Fiber: 1g | Sugar: 5g | Vitamin A: 425IU | Vitamin C: 50.5mg | Calcium: 390mg | Iron: 12.4mg