I was also thinking of bread crumbs or a stuffing. Mix some olive oil and Dijon mustard together then combine with breadcrumbs. To this mixture you could add of course, salt and pepper, then you could add either some rosemary, or oregano, or cilantro (I would add a bit of lime and ground cumin if using cilantro),
Line your steak with spinach leaves, thin julienne slices of red pepper and carrots, then add the mixture above. Or you can put this mixture next to the neat and make the spinach and veggies a center - that's probably what I would do.
"Count yourself...you ain't so many" - quote from Buck's Daddy