Ingredients for - French Dip Egg Rolls

1. 3 tbsp. butter, divided
2. 2 large onions, thinly sliced
3. 4 sprigs thyme, plus 2 tsp. minced
4. Kosher salt
5. Freshly ground black pepper
6. 8 egg roll wrappers
7. 1/3 c. grainy mustard
8. 16 slices deli-sliced roast beef
9. 16 slices provolone
10. Vegetable oil, for frying
11. 1 tbsp. all-purpose flour 
12. 2 cloves garlic, minced
13. 1 1/2 c. low-sodium beef broth
14. 2 tsp. Worcestershire sauce

How to cook deliciously - French Dip Egg Rolls

1 . Stage

In a large skillet over medium-high heat, melt 2 tablespoons butter. Add onion and thyme sprig and season with salt and pepper. Cook, stirring occasionally, until caramelized, about 15 minutes. Discard thyme.

2 . Stage

Set an egg roll wrapper in a diamond shape and spread mustard in center. Add 2 slices of beef, 2 slices provolone, and a spoonful of caramelized onions. Fold up bottom half and sides, then gently roll, sealing the seam with a couple drops of water. Repeat with remaining filling and wrappers.  

3 . Stage

In a large, deep skillet, heat 1" vegetable oil over medium heat. Working in batches, add egg rolls and fry until golden, 1 minute per side. Drain on a paper towel–lined plate and let cool slightly. Repeat with remaining egg rolls. 

4 . Stage

Meanwhile, make au jus: melt remaining 1 tablespoon butter in a medium skillet over medium heat. Add flour, garlic, and thyme, and cook until fragrant, about 1 minute. Add beef stock and Worcestershire sauce. Simmer for 5 minutes until reduced slightly. Season with salt and pepper.

5 . Stage

Serve egg rolls warm with dipping sauce.