Preheat oven to 425° F and while oven is preheating, slice French roll in half horizontally.
In a small pan over medium high heat, melt butter along with olive oil. Sauté onion just till it’s translucent, about 5 minutes. Add flour and cook while stirring for an additional minute. Add remaining ingredients for au jus, bring to a low boil, then remove from heat.
I knew the first time I ate a roast beef French dip sandwich that I was in love. It’s crazy what memories stick with us from childhood, right? I remember it like yesterday, I had earned some money raking leaves one fall with my buddy and fellow gourmet griller James. After a long day we were hungry enough to eat an old shoe when we rolled into that timeworn Arby’s on Telegraph Road. I ordered the French dip sandwich for the first time and thought I had died and gone to heaven.Anyway, I’ve loved the roast beef French dip sandwich ever since then and have been making a version of it for years. This one is simple and delicious, and with the help of a deli slicer you can shave the smoked roast beef thin enough to read a newspaper through. Side note: a deli slicer isn’t required for this, but it does make things easier. The downside to a deli slicer is the cleaning and storage, but I use it enough to justify it—at least to myself.
Smoked Roast Beef French Dip Sandwich https://www.grillseeker.com/smoked-roast-beef-french-dip-sandwich/