Steak and Caramelized Onion Melted Sandwich on Sourdough Recipe
Introduction
This steak sandwich is a deliciously satisfying meal, featuring tender sirloin steak, melted cheese, and sweet caramelized onions all sandwiched between buttery toasted sourdough bread. Perfect for lunch or dinner, it combines rich flavors and a delightful mix of textures that will quickly become a favorite.
Ingredients
- 1 pound sirloin steak, cooked to desired doneness and thinly sliced
- 8 slices thick-cut sourdough bread
- 4 slices Provolone or Pepper Jack cheese
- 1 cup caramelized onions
- ½ cup garlic aioli
- 4 tablespoons butter, softened
Instructions
- Step 1: Heat a griddle or large skillet over medium-high heat.
- Step 2: Butter the outside of each slice of bread. Place 4 slices of bread, buttered side down, on the griddle. Top these with the sliced cheese. On the remaining 4 slices, buttered side down, spread the caramelized onions evenly.
- Step 3: Cook for 3 to 4 minutes, until the cheese has melted and the bread is golden and toasted. If the cheese needs extra melting, cover with a lid or a large skillet for a minute.
- Step 4: Remove the cheese-topped bread from the griddle and spread the garlic aioli over the melted cheese. Add the sliced steak on top, then assemble the sandwiches by placing the onion-topped bread on top. Return to heat briefly if needed to warm through.
- Step 5: Transfer the sandwiches to a cutting board and cut in half before serving.
Tips & Variations
- Try swapping Provolone for Pepper Jack if you prefer a little spice in your sandwich.
- Adding a handful of fresh arugula or spinach gives a nice peppery crunch.
- To caramelize onions yourself, cook thinly sliced onions slowly in butter over low heat until golden and sweet, about 20–30 minutes.
- Use a cast-iron skillet for even heat and great toasting on the bread.
Storage
Store any leftover steak sandwiches wrapped tightly in foil or plastic wrap in the refrigerator for up to 2 days. Reheat gently in a skillet over low heat to preserve the bread’s texture and avoid drying out the steak. Avoid microwaving to keep the sandwich from becoming soggy.
How to Serve
Serve this delicious recipe with your favorite sides.
FAQs
Can I use a different cut of steak for this sandwich?
Yes, you can use other tender cuts like ribeye or strip steak as long as it is cooked to your liking and sliced thinly for easy sandwich assembly.
What can I substitute for garlic aioli?
If you don’t have garlic aioli, you can mix mayonnaise with minced garlic or use a flavored mayonnaise to achieve a similar creamy, garlicky spread.
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Steak and Caramelized Onion Melted Sandwich on Sourdough Recipe
- Total Time: 20 minutes
- Yield: 4 sandwiches 1x
Description
This hearty Steak Sandwich features tender, thinly sliced sirloin steak layered with melted provolone cheese, sweet caramelized onions, and creamy garlic aioli, all nestled between thick-cut, buttery sourdough bread slices toasted to golden perfection on a griddle or skillet. Perfect for a satisfying lunch or dinner, this sandwich combines rich flavors and a delightful contrast of textures.
Ingredients
Steak and Toppings
- 1 pound sirloin steak, cooked to desired doneness and thinly sliced
- 1 cup caramelized onions
- 4 slices Provolone or Pepper Jack cheese
- ½ cup garlic aioli
Bread and Butter
- 8 slices thick-cut sourdough bread
- 4 tablespoons butter, softened
Instructions
- Preheat the skillet: Heat a griddle or large skillet over medium-high heat to prepare for toasting the sandwiches.
- Prepare the bread bases: Butter the outside of all 8 slices of sourdough bread. Place 4 slices, buttered side down, onto the hot griddle, then immediately layer each with a slice of cheese.
- Add onions and the top bread slices: On the remaining 4 slices of bread, buttered side down, evenly distribute the caramelized onions. Place these slices, buttered side up, on top of the cheese-covered bread on the griddle to form sandwiches.
- Cook and melt cheese: Allow the sandwiches to cook for 3-4 minutes until the bread is golden and toasted and the cheese has melted. To help the cheese melt evenly, cover the skillet with a lid if needed.
- Add aioli and steak: Remove the sandwiches carefully from the heat. Spread garlic aioli over the melted cheese side inside each sandwich, then top with the thinly sliced steak.
- Assemble and serve: Close the sandwiches and place them on a cutting board. Slice each sandwich in half and serve immediately while warm.
Notes
- For best results, use a medium-high heat to achieve a perfect golden crust without burning the bread.
- Covering the skillet while cooking helps melt the cheese evenly.
- You can prepare caramelized onions in advance to save time.
- Adjust steak doneness to your preference before slicing.
- Substitute sourdough with your favorite sturdy bread if desired.
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Category: Sandwich
- Method: Stovetop
- Cuisine: American
Keywords: steak sandwich, caramelized onion sandwich, grilled cheese steak sandwich, sourdough steak sandwich, garlic aioli sandwich
