Keto steak and cheese sandwich with melted provolone, green peppers and sauteed onions.

Keto Steak and Cheese Sandwich Recipe

Tender seared sirloin with sauteed green pepper and onion, topped with melted provolone and served in toasted keto sandwich rolls.

Prep 15 min
Cook 20 min
Total 35 min
Servings 4 sandwiches
Difficulty Easy
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Air fryerConversion not recommended

Contains: Milk · Wheat

This recipe uses provolone and wheat-based keto sandwich rolls. Keto roll formulations vary and may also contain egg, soy, sesame, tree nuts or additional allergens, so check the label of the rolls you use.

WHY IT WORKS

Why This Recipe Works

01

Thin Steak Cooks Fast

Thinly sliced sirloin browns quickly in a hot skillet, keeping the steak tender while developing plenty of savory flavor.

02

Cook in Stages

Cooking the peppers and onions before the steak prevents the pan from becoming crowded and helps both the vegetables and beef brown properly.

03

Melt the Cheese in the Pan

Dividing the hot filling into portions and melting the provolone directly over each pile gives every sandwich an even layer of gooey cheese.

WHAT YOU’LL NEED

Equipment

12-inch skillet with lid
Tongs or spatula
Cutting board
Sharp knife

THE RECIPE

Ingredients & Method

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Measurements
Servings

My Notes

Ingredients

Tick ingredients as you use them.

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Measurements
  • Steak and Vegetables
  • Tools
  • Sandwiches

Method

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  1. Pat the steak dry and slice it very thinly across the grain. Toss it with the garlic powder, salt and black pepper.
  2. Heat a 12-inch skillet over medium heat. Place the keto rolls cut-side down in the dry skillet and toast for 1 to 2 minutes, until lightly golden. Transfer them to plates.
  3. Add 1 tablespoon (tbsp) olive oil to the skillet. Add the onion and green bell pepper and cook for 6 to 8 minutes, stirring occasionally, until softened and lightly browned. Transfer the vegetables to a plate.
  4. Increase the heat to medium-high. Add the remaining 1 tablespoon (tbsp) olive oil and cook the steak in two batches for about 2 to 3 minutes per batch, turning and stirring just until browned. Return all the steak and the cooked vegetables to the skillet and toss together.
  5. Divide the steak and vegetable mixture into 4 portions in the skillet. Top each portion with 2 ounces (oz) provolone. Cover and cook for 1 to 2 minutes, until the cheese has melted.
  6. Transfer each cheesy steak portion to a toasted keto roll and serve immediately.

COOKING GUIDANCE

Practical Cooking Notes

Make Ahead

The steak, pepper and onion can be sliced up to 1 day ahead and refrigerated separately in covered containers. The cooked filling can also be prepared ahead, chilled promptly and reheated in a skillet before the cheese is melted over it.

Recipe tools

Adapt This Recipe

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Dietary options

Make This Recipe Work for You

Only straightforward swaps are offered automatically. If changing a defining ingredient would effectively create a different dish, that conversion is left out.

Make It Dairy-Free

Change the following ingredients:

Replace8 ounces (oz) sliced provolone cheese

With8 ounces (oz) sliced dairy-free cheese

Replace4 wheat-based keto sandwich rolls, split

With4 dairy-free wheat-based keto sandwich rolls, split

Choose a dairy-free sliced cheese that melts well and use keto rolls labelled dairy-free.

Make It Gluten-Free

Change the following ingredient:

Replace4 wheat-based keto sandwich rolls, split

With4 gluten-free low-carb sandwich rolls, split

Use gluten-free low-carb sandwich rolls that suit your carbohydrate target.

For allergies, intolerances or strict dietary requirements, check the labels of the specific products you use. These swaps do not certify a recipe or ingredient as allergen-free.

Recipe Notes

Ingredient Notes

Sirloin gives a good balance of tenderness, flavor and leanness. Slice it thinly across the grain for the most tender filling. Keto sandwich rolls vary widely in size and nutrition, so choose rolls that fit your preferred carbohydrate target.

Useful Substitutions

Ribeye can replace the sirloin for a richer sandwich, while flank steak also works when sliced very thinly across the grain. Mozzarella or Monterey Jack can replace the provolone if preferred, although the flavor will be milder.

INGREDIENT QUALITY

Quality Note

Slice the steak as thinly as practical across the grain and cook it in batches. Thin slices brown quickly, while an uncrowded skillet prevents the beef from steaming and becoming tough.

SPEND LESS

Cost-Saving Tip

Sirloin is usually less expensive than ribeye while still working well for this sandwich. Buying a larger sirloin steak and slicing it yourself can also be better value than purchasing pre-sliced steak.

COOKING TIPS

Tips

Start with Cold Steak

Well-chilled steak is firmer and easier to slice thinly. If needed, place it in the freezer for 15 to 20 minutes before slicing.

Do Not Crowd the Pan

Cook the steak in two batches so it sears instead of steaming. Return everything to the skillet only after the beef has browned.

Toast the Rolls

A quick toast on the cut sides helps keto rolls hold up better against the juicy steak and melted cheese.

Cover to Melt

Cover the skillet briefly after adding the provolone. The trapped heat melts the cheese without overcooking the steak.

MAKE IT LAST

Storing, Freezing & Reheating

Storing

Refrigerate the cooked steak, vegetables and cheese filling in a covered container within 2 hours and use it within 3 to 4 days. Store the rolls separately so they do not become soggy.

Freezing

Freeze the cooled steak and vegetable filling without the rolls in an airtight container for up to 2 months. Thaw overnight in the refrigerator before reheating.

Reheating

Warm the filling in a skillet over medium-low heat until hot throughout, adding the cheese near the end if it was stored separately. Toast and fill the rolls just before serving.

ESTIMATED PER SERVING

Nutrition

1 sandwich

630 kcal Calories
39 g Fat 50% DV
17 g Saturated fat 85% DV
19 g Carbohydrate 7% DV
10 g Fiber 36% DV
4 g Sugars
51 g Protein
850 mg Sodium 37% DV
140 mg Cholesterol 47% DV

Nutrition information is an estimate. Where shown, % Daily Value uses standard US Daily Values for adults and children aged 4+; actual values vary with ingredient brands, exact quantities and portion size.

QUESTIONS

Keto Steak and Cheese Sandwich FAQs

What steak is best for a steak and cheese sandwich?

Sirloin works well because it is flavorful, relatively lean and easy to slice thinly. Ribeye is richer and more tender, while flank steak is a good alternative when sliced very thinly across the grain.

How do I keep this steak and cheese sandwich low carb?

Use a keto or low-carb sandwich roll that fits your carbohydrate target and avoid sweet sauces. The steak, cheese, peppers and onions in this recipe are prepared without added sugar.

Can I make the filling ahead of time?

Yes. Cook the steak and vegetables, cool them promptly and refrigerate them in a covered container. Reheat the filling in a skillet, melt the cheese over it and assemble the sandwiches just before serving.

Can I leave out the peppers or onions?

Yes. Either vegetable can be reduced or omitted without changing the cooking method. If you are closely managing carbohydrate intake, reducing the onion will lower the carbohydrate contribution from the vegetables.

What cheese works best?

Provolone melts smoothly and has enough flavor to stand up to the steak. Mozzarella or Monterey Jack also melt well if you prefer a milder sandwich.

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