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A close-up view of crispy oven baked brisket tacos on a small metal trey with a lime wedge and a small pile of pickled red onions in the rear or the pan.

Crispy Baked Brisket Tacos (with Jalapeño-Lime Sauce)

Course: Lunch / Dinner
Cuisine: Mexican / TexMex
Prep Time: 30 minutes
Cook Time: 4 hours
Total Time: 4 hours 30 minutes
Servings: 8
Calories: 595kcal
Author: Kris Longwell
These tacos feature succulent, stout-braised brisket tucked into corn tortillas and baked until golden and incredibly crispy. Finished with a zesty green sauce and bright pickled onions, they are a flavor explosion in every bite!
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Equipment

  • Oven-safe pot with lid preferably a Dutch oven
  • baking pan lined with parchment paper or a silicone mat

Ingredients

Do Ahead - The Jalapeño-Lime Sauce

  • Jalepeño-Lime Sauce click link for easy recipe

For the Brisket

  • 3½ lb brisket flat
  • Kosher salt
  • ¼ cup beef rub see NOTES about salt
  • 2 tablespoon olive oil
  • 1 cup beef stock or broth
  • ½ cup beer stout or lager, or apple cider - plus a splash more for deglazing the pan
  • 1 tablespoon Worcestershire sauce

For the Pickled Red Onions

  • 1 large red onion cut into thin slices with a mandolin or sharp knife
  • ½ cup water
  • ½ cup distilled white vinegar
  • ½ cup apple cider vinegar
  • 1½ tablespoon sugar
  • 1½ teaspoon salt
  • 1 clove garlic crushed
  • 6 black peppercorns
  • 1 pinch red pepper flakes

For the Tacos

  • 16 yellow corn tortillas
  • 1 lb Colby Jack cheese shredded, see NOTES
  • Jalapeño-Lime Sauce
  • Pickled red onions
  • cilantro fresh, chopped, for garnish
  • extra au jus sauce for dipping

Instructions

Do Ahead - Make the Jalapeño-Lime Sauce

  • Prepare the Jalapeño-Lime Sauce and store it in a jar (or a container) with a lid in the fridge. Let it come to room temperature before serving.
    Jalepeño-Lime Sauce

Prepare the Braised Brisket

  • Preheat oven to 300°F.
  • Liberally season the brisket all over with salt and the beef rub (see NOTES about salt).
    3½ lb brisket, Kosher salt, ¼ cup beef rub
  • Heat the olive oil in a large Dutch oven (or oven-safe pot) over medium-high heat. Add the brisket and sear for about 5 minutes on each side, until browned all over.
    2 tablespoon olive oil
  • Place two large pieces of heavy-duty foil on a cutting board. Place the seared brisket on the foil.
  • With the heat still on the stove, pour a splash of the beer into the pan and use a wooden spatula to scrape up bits on the bottom of the pan.
  • In a large measuring cup (or bowl), combine the beef stock, beer (½ cup), and Worcestershire sauce. Pour the deglazed liquid from the pot into the braising liquid. Whisk to combine. Wipe the Dutch oven out with a paper towel.
    1 cup beef stock, ½ cup beer, 1 tablespoon Worcestershire sauce
  • Lift the foil holding the brisket and place it back into the Dutch oven. Make sure the foil creates a "bowl" to hold the beef and the liquid without leaking. Pour the braising liquid over the brisket. Tightly close the foil over the meat. Cover with the Dutch oven (or pot) lid and place in the oven, and bake for 3½ to 4 hours.

Prepare the Pickled Red Onions

  • Slice the onion to ⅛-inch thickness on a mandolin or with a sharp knife. Stuff them into a standard Mason jar (you may have extra onion leftover).
    1 large red onion
  • In a medium saucepan, heat the water, white vinegar, apple cider vinegar, sugar, salt, garlic, peppercorns, and red pepper flakes to a simmer. Simmer for a couple of minutes and then carefully pour the liquid into the jar with the onions. (You may have extra pickling liquid leftover.) Affix the lid and let it rest at room temperature while the brisket is baking. (The onions can be made up to 2 days in advance.)
    ½ cup water, ½ cup distilled white vinegar, ½ cup apple cider vinegar, 1½ tablespoon sugar, 1½ teaspoon salt, 1 clove garlic, 6 black peppercorns, 1 pinch red pepper flakes

Prep the Braised Brisket and Make the Tacos

  • Take the Dutch oven (or pot) out of the oven and increase the oven temperature to 425°F.
  • Carefully remove the brisket from the foil and place it on a rimmed baking pan. Carefully drain the braising liquid from the foil into the pot. Simmer the liquid for a couple of minutes. Set aside.
  • Use two forks to shred the brisket. Sprinkle the shredded brisket with a healthy pinch or two of coarse salt (or just regular table salt). Pour about 1 cup of the simmered braising liquid over the shredded beef and toss to coat.
  • Pour about 1 cup of the braising liquid into a shallow bowl. You will notice that the rendered fat from the brisket will rise to the top (this is good).
  • Wrap the tortillas in paper towels and lightly dampen them with a little tap water. Microwave them on HIGH for 45 seconds to 1 minute, or until they are heated (this will make them pliable).
    16 yellow corn tortillas
  • Place parchment paper (or a silicone mat) in a baking pan (you may need two pans, depending on how many tacos you are preparing).
  • Working one tortilla at a time, lower one tortilla onto the surface of the braising liquid. Use your fingers to spread the grease and liquid all over the tortilla. Don't get them too wet; you want them lightly greased, but completely covered. Place on the prepared baking pan. Place a mound of cheese on one side of the tortilla. Top with a mound of the shredded brisket, and then top that with another small mound of cheese. Let some of the cheese fall outside the taco; this will create that crispy "burnt" cheese on the edge of the taco that is so good. Repeat this process with the remaining tortillas. You may have brisket and cheese left over. Refrigerate or freeze for future use.
    1 lb Colby Jack cheese
  • Bake the tacos for 10 minutes. Remove the pan from the oven, flip the tacos over with a spatula, and continue baking for another 8 to 10 minutes. While the tacos are baking, drain the pickled red onions and place them in a serving bowl.
  • Remove the tacos from the oven. Place them on a platter or individual plates/trays and serve them at once with jalapeño-lime sauce, pickled red onions, and chopped fresh cilantro. Pour the remaining au jus sauce into small bowls and serve for dunking.
    Jalapeño-Lime Sauce, Pickled red onions, cilantro, extra au jus sauce

Video

Notes

NOTE: Watch the video in the recipe card for visual guidance.
Beef Rub Note: Our homemade rub is salt-free. If using a store-bought blend, check the label for sodium; if it already contains salt, omit the extra salt from the recipe to prevent over-seasoning.
Slow-Cooker Option: After searing, place the brisket and braising liquid in a slow cooker. Cook on Low for 8–10 hours or High for 5–6 hours until fork-tender, then shred and proceed with the taco assembly as directed.
The Flavor Dip: For the most flavorful shell, drag the tortilla through the fat layer at the top of your braising liquid before filling.
Don't Overfill: Keep the meat layer relatively thin so the taco stays closed and the cheese can act as the "glue" to hold it all together.
Pliable Tortillas: Always warm your tortillas in a damp paper towel before filling; this prevents them from cracking when you fold them.
Best Cheeses for Melting: We used Colby Jack, but Monterey Jack, Sharp Cheddar, Pepper Jack, or Oaxaca are all excellent choices for a perfect, gooey melt.
Leftover Brisket & Cheese: Store any extras in the fridge for 4 days or freeze for up to 3 months. They are perfect for quick next-day nachos, quesadillas, or breakfast hashes!

Nutrition

Calories: 595kcal | Carbohydrates: 7g | Protein: 55g | Fat: 24g | Saturated Fat: 9g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 7g | Cholesterol: 177mg | Sodium: 764mg | Potassium: 838mg | Fiber: 0.3g | Sugar: 4g | Vitamin A: 570IU | Vitamin C: 1mg | Calcium: 411mg | Iron: 5mg