- 1 package of 2 tenderloins (about 2 pounds), you can ask your butcher to butterfly it for you or do it yourself
- 1/4 cup honey
- 1/2 cup whole-grain mustard
- 4 tablespoons butter
- 3 slices whole grain bread, toasted and ground into breadcrumbs in a food processor
- 2 tablespoons butter, melted
- 2 boxes frozen spinach, defrosted, drained and squeezed dry
- Salt and freshly ground black pepper
- 1 orange, juiced and 1/2 zested
- 1 egg, beaten
Preheat the oven 475F.
Butterflying a tenderloin: Trim the silver skin or connective tissue with a very sharp, thin knife. Place the tenderloin on a cutting board vertically then slice through the tenderloin about a 1/3 of the way down the side. Fold that flap open and give it a light pounding using a mallet or the back of a small saute pan. Turn the cutting board 180 degrees and slice into the tenderloin 2/3 of the way down on the other side so that it opens up like an accordion or a business letter. Give that side a light pounding, so that the whole tenderloin is flat, rectangular and ready to be stuffed and rolled up. Repeat with other tenderloin.
In a small bowl, combine the honey and mustard. In a large mixing bowl, add the breadcrumbs, melted butter, spinach, salt, pepper, orange zest and the beaten egg, stir to combine. Brush the honey mustard mixture on the inside of the butterflied tenderloins. Spread the spinach mixture evenly over the honey mustard leaving a one-inch border.
Roll the tenderloins back up and place them seam side down on a nonstick baking sheet. Coat them with EVOO, salt, pepper and the orange juice, pop them into the oven and roast for 15-20 minutes, or until the internal temperature reaches 140-145F. Let meat rest, transfer to a carving board, slice and serve with Mini Twice-Baked Potatoes alongside.