1.Heat A Large Skillet Over Medium Heat, And Pan-Fry The Round Steaks 5 Minutes On Each Side, Or To Desired Doneness. 2.Slice The Rolls Lengthwise. Spread About 1 Tablespoon Of Sour Cream Onto One Side Of Each Roll, And Top With About 1/3 Cup Of Mashed Pinto Beans Per Sandwich. Place A Cooked Round Steak Per Sandwich On Top Of The Pinto Beans, And Then Layer Each Sandwich With One-Fourth Of The Avocado Slices, Tomato Slices, And Sliced Pickled Jalapenos, About 1/2 Cup Of Shredded Lettuce, 1/4 Cup Of Cilantro, And 1/4 Cup Of Crumbled Queso Fresco Cheese. Squeeze A Lime Wedge Over Each Sandwich, Close, And Serve.