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two halves of a baked steak and arugula sandwich on top of each other on a brown cutting board
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5 from 2 votes

Panera Steak and Arugula Sandwich (Oven Baked)

This oven baked steak and arugula sandwich is like a baked grilled cheese. This healthy grilled cheese is a great high protein sandwich for lunch or dinner.
Prep Time5 mins
Cook Time25 mins
Total Time30 mins
Course: Main Course
Cuisine: American
Keyword: arugula, beef, grilled cheese, sandwich, steak
Servings: 4 people
Calories: 535kcal

Equipment

  • Baking Sheet

Ingredients

  • 12 OZ Ribeye Steak
  • 8 Slices Light White Cheese (lite havarti, provolone or swiss)
  • 8 Slices Bread Sourdough
  • 2 Cups Arugula
  • 1 TBSP Avocado Oil
  • 3 TBSP Unsalted Butter

Instructions

  • Take out butter 1-2 hours before making sandwich. This will allow it to soften.
  • Pre-heat the oven to 425ºF.

Slice & Cook the Steak

  • Take out the ribeye from the refrigerator and immediately cut while still cold.
  • Remove any large areas of fat and toss.
  • Place the steak horizontal to you and slice as thin as possible. The slices should be short and thin. Sprinkle with ~½ tsp salt.
  • Heat a cast iron or sauté pan on high heat with 1 TBSP of neutral oil (like canola or avocado oil). When the pan is hot, place the thin sliced steak spread out. Sear both sides for 2-minutes each, until browned on each side.
  • Do in sections until all steak is seared and let sit on a cutting board or plate.

Build the Steak & Arugula Sandwich

  • Spread the butter on one side of all slices of bread - 8 sides in total.
  • Place 4 bread slices butter side down on an aluminum-lined baking tray.
  • Place one slice of cheese on top of each piece of bread.
  • Add thin-sliced steak onto each bread slice. I used around 5-6 pieces of steak per bread slice but will depend on how much steak you have.
  • Place arugula evenly on top of steak (around ½ cup each) and top with remaining slices of cheese per bread slice.
  • Put top bread slice on top, butter side facing up.

Cook the Sandwich

  • Put the baking tray with the uncooked sandwiches into the oven.
  • Bake for 15-minutes.
  • Broil on High for 2-minutes, watching very carefully to ensure the top slice doesn’t burn.
  • Remove from oven immediately and cut in half or enjoy whole!

Notes

LIGHT WHITE CHEESE SLICES. I prefer using a lower calorie white cheese for this steak and arugula sandwich. I used lite havarti, but regular provolone, swiss or havarti are great choices. Also feel free to use your favorite cheese slices - all will taste great!
RIBEYE STEAK. Sometimes I can find beef pre-cut and thinly shaved. Other times I can’t. I keep mine cold in the fridge to cut easier. Then when still cold I remove the fat and slice very thinly before cooking. The most important part is making sure it is thin as possible. This makes sure the steak doesn’t get stuck in your teeth - a pet peeve! You can also use flank steak as a substitute, or switch it up with deli meat or shredded chicken.
ARUGULA. Peppery arugula is a great match for a steak grilled cheese. I love having greens in everything I eat and arugula is a personal favorite. Other options are: baby kale or spinach.
SOURDOUGH BREAD. This is the best bread for a grilled cheese - it’s wider and can hold up to the ingredients. You can substitute for any favorite sandwich bread you have.
DAIRY FREE. Swap cheese for dairy-free slices.
GLUTEN FREE. Swap sourdough for gluten-free sourdough or gluten free sandwich bread.
LOADED UP. Want to load this steak and arugula sandwich even more? Add caramelized onions or shallots, or use a fig jam! You could also add dijon mustard.

Nutrition

Serving: 1sandwich | Calories: 535kcal | Carbohydrates: 30g | Protein: 32g | Fat: 32g | Saturated Fat: 17g | Trans Fat: 1g | Cholesterol: 106mg | Sodium: 404mg | Potassium: 395mg | Fiber: 3g | Sugar: 4g | Vitamin A: 796IU | Vitamin C: 2mg | Calcium: 371mg | Iron: 4mg