Place roast, fat side up, in a shallow roasting pan.
Season with salt and pepper.
Insert meat thermometer avoiding bone.
Roast, uncovered, at 325° till meat thermometer registers 140° for rare, 160° for medium, and 170° for well-done.
Remove meat from pan.
Cover; keep warm.
Reserve 1/4 cup meat drippings.
Increase oven temperature to 400°.
Combine eggs, flour, milk, and salt.
Beat 1 1/2 minutes with electric mixer.
Pour half the reserved drippings into each of two 9x9x 2-inch baking pans.
Pour half the batter into each pan.
Bake at 400° for 30 minutes.