• 1 ½ pounds very thinly sliced beef sirloin (I get mine from Trader Joe’s), or ribeye
• Cracked black pepper
• ¼ teaspoon onion powder
• 4 tablespoons all-purpose flour, divided use
• Olive oil
• 2 onions, quartered and thinly sliced
• 10 ounces white mushrooms, sliced
• ½ teaspoon dried thyme
• 2 cloves garlic, pressed through garlic press
• 4 cups beef stock, hot
• 4 sourdough bread bowls, centers hollowed out and reserved for dipping
• 4 slices provolone cheese
1-Add the thinly sliced beef sirloin to a large bowl, and season with a couple of pinches of salt and cracked black pepper, plus the onion powder, and toss to coat; sprinkle over 2 tablespoons of the flour, and again, toss to coat.
2-Place a non-stick pot over medium-high heat, and drizzle in about 3-4 tablespoons of oil; once hot, add about half of the sirloin in, and allow it to sear for about a minute or two, then toss/stir, and allow it to sear/brown on the other sides for another 1-2 minutes, and remove onto a plate to hold (the meat may still be a little pink inside); repeat with the remaining half of the sirloin, and set aside.
3-Next, add a little more oil to the pot if needed, and add in the sliced onions, along with a pinch of salt and cracked black pepper; allow the onions to caramelize for roughly 6 minutes, stirring frequently to avoid burning them, until golden-brown and softened; then, add in the mushrooms, and allow them to continue sauteing with the onions for another 6 minutes or so, stirring frequently.
4-Add in the dried thyme and the garlic, and stir to incorporate …