Grilled Beef and Onion Panini

Sink your teeth into this irresistible Grilled Beef and Onion Panini, a perfect harmony of smoky, savory flavors and hearty, melty goodness. Featuring tender slices of seared sirloin steak, caramelized onions, and gooey provolone cheese, all nestled between crispy sourdough bread with a tangy Dijon mustard and garlic mayo spread, this recipe takes classic comfort food to the next level. The secret lies in the bold flavor combinations and simple yet elevated cooking techniques, like grilling the beef to perfection and achieving golden, buttery caramelized onions. Perfect for lunch or a casual dinner, this panini is a satisfying, handheld feast in just 35 minutes. Serve it with your favorite side or dipping sauce for an easy, crowd-pleasing meal.

Nutriscore Rating: 54/100

Prep Time:15 mins

Cook Time:20 mins

Total Time:35 mins

Servings: 2

Ingredients

• 8 oz sirloin steak
• 2 tbsp olive oil
• 1 tsp salt
• 0.5 tsp black pepper
• 1 large yellow onion
• 1 tbsp butter
• 4 slices sourdough bread
• 4 slices provolone cheese
• 2 tbsp Dijon mustard
• 2 tbsp mayonnaise
• 0.5 tsp garlic powder

Directions

Step 1

Season the sirloin steak with 1 tablespoon of olive oil, salt, and pepper. Set aside for 5 minutes to marinate lightly.

Step 2

Heat a grill pan over medium-high heat. Once hot, sear the steak for 3-4 minutes on each side for medium doneness, or cook to your preferred level. Remove the steak from the pan, let it rest for 5 minutes, then slice it thinly against the grain.

Step 3

While the steak is resting, peel and slice the yellow onion into thin rings.

Step 4

In a skillet, heat 1 tablespoon of olive oil and butter over medium heat. Add the onion slices and cook for 8-10 minutes, stirring occasionally, until they are golden brown and caramelized. Remove from heat and set aside.

Step 5

In a small bowl, mix mayonnaise, Dijon mustard, and garlic powder to create a spread.

Step 6

Spread the mayonnaise-mustard mixture evenly on one side of each slice of sourdough bread.

Step 7

Assemble the panini by layering provolone cheese, sliced beef, caramelized onions, and another slice of cheese onto two of the bread slices. Top with the remaining slices of bread, spread-side down.

Step 8

Heat a panini press or a grill pan over medium heat. Place the sandwiches in the press or pan, cooking for 3-4 minutes on each side (use a heavy skillet to press down if using a pan) until the bread is golden and crispy, and the cheese is melted.

Step 9

Remove the panini, slice them in half, and serve immediately with your favorite side dish or dipping sauce.

Nutrition Facts

Serving size	824.1 grams (824.1g)

Amount per serving	% Daily Value*
Calories	2066

Total Fat 125.30g	161%
Saturated Fat 41.90g	209%
Polyunsaturated Fat 4.20g
Cholesterol 349mg	116%
Sodium 6012mg	261%
Total Carbohydrate 124.50g	45%
Dietary Fiber 7.10g	25%
Total Sugars 11.30g
Protein 114.40g	229%

Vitamin D 20IU	102%
Calcium 1013mg	78%
Iron 11mg	58%
Potassium 1209mg	26%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 54.1%

Protein: 22.0%

Carbs: 23.9%