Grilled Flatiron Steak with Toasted Spice Vinaigrette

• 1 ½ pounds flatiron or skirt steak, cut into 4 pieces
• 1 tablespoon olive oil

Kosher salt, freshly ground pepper

• 4 beefsteak or heirloom tomatoes, sliced ½" thick

Toasted Spice Vinaigrette (click for recipe)

1. Prepare grill for medium-high heat. Rub steak with oil; season with salt and pepper. Grill about 4 minutes per side for medium rare. Let cool 5 minutes before slicing against the grain.
2. Serve steak on top of tomatoes with vinaigrette spooned over.