Here's everything you need to get started. If you don't know how to butterfly a steak or don't want to take the time, you can buy it already butterflied or ask the butcher to do it for you when you buy it.
Ingredients to Gather
1-2 lb flank steak butterflied
2 tbsp panko
1 egg yolk
1 and 1/2 cup mozzarella cheese grated or shredded
1 cup spinach frozen pkg – thawed, rinsed, and well drained
1/2 cup sun dried tomatoes roughly chopped
1/2 tsp garlic salt divided
1 pinch pepper to taste
2 tbsp olive oil
Directions To Follow
Begin by preheating your oven to 425 degrees Fahrenheit.
If you have not already done so, butterfly your steak by lining your knife up parallel with a cutting board and slicing through the center of the steak, stopping just short of cutting all the way through. This will make it so that you can open up the steak like sandwich bread, doubling the original length of the steak. Need a visual guide? Check out this video. Tip: If picking up a steak from a deli, ask if they will butterfly it for you. Also, some grocery stores might sell flank steaks that have already been butterflied. Check the prepared meats
