This oven baked 3-ingredients onion cranberry brisket is the kind of dish that shows up at a neighborhood potluck and disappears almost immediately. The meat turns so tender it practically falls apart when you try to slice it, thanks to a long, gentle bake and a simple pantry-friendly sauce. This style of brisket has roots in Midwestern and Jewish-American home cooking, where brisket is often braised low and slow with sweet-tangy ingredients like onion soup mix and cranberry sauce. It’s a practical, no-fuss recipe: everything goes into a disposable aluminum roasting pan, the oven does the work, and you end up with slices of beef blanketed in a dark red oniony glaze that tastes like you spent all day fussing over it.
Serve this brisket sliced across the grain with plenty of the dark red onion-cranberry glaze spooned over the top. It’s wonderful with mashed potatoes, buttered egg noodles, or a simple rice pilaf to soak up the sauce. On the vegetable side, think roasted carrots, green beans, or a basic green salad with a sharp vinaigrette to balance the sweetness. Leftovers make fantastic sandwiches on soft rolls with a bit of the sauce and some crunchy coleslaw, or you can tuck the meat into tacos with pickled onions for an easy weeknight twist.
Oven Baked 3-Ingredients Onion Cranberry BrisketServings: 8
Ingredients
4 to 5 pounds beef brisket, flat cut, trimmed of excess hard fat
1 packet (1 ounce) dry onion soup mix
1 can (14 to 16 ounces) whole-berry cranberry sauce
Directions
Preheat your oven to 300°F (150°C). Place a disposable aluminum roasting pan on a sturdy baking sheet for easier handling.
Lay the brisket in the aluminum pan, fat side up if there is a fat cap remaining. Pat it dry with paper towels so the topping adheres well.
Sprinkle the dry onion soup mix evenly over the entire surface of the brisket, using your hands to pat it on so it sticks.
Spoon the whole-berry cranberry sauce over the top of the brisket, spreading it into an even layer so the meat is well coated. It will melt into a dark red oniony glaze as it bakes.
Cover the pan tightly with heavy-duty aluminum foil, crimping the edges to seal in moisture. This trapped steam is what helps the meat become fall-apart tender.
Transfer the pan (still on the baking sheet) to the preheated oven. Bake for 3 1/2 to 4 hours, until the brisket is very tender when pierced with a fork and just about falling apart. Thicker cuts may need closer to 4 hours.
Carefully remove the pan from the oven and let the brisket rest, still covered, for at least 20 to 30 minutes. Resting allows the juices to redistribute and makes slicing easier, even though the meat is very soft.
Uncover the pan. Transfer the brisket to a cutting board, reserving all the dark red onion-cranberry juices in the pan. Using a sharp knife, slice the brisket across the grain into thick slices; if it is extremely tender, you may end up with some pieces that naturally fall apart, which is exactly what you want.
Return the sliced brisket to the disposable pan, nestling the slices back into the sauce so they are coated and glossy. Spoon additional sauce over the top so every slice is covered in the dark red glaze.
Serve the brisket straight from the aluminum pan while hot, or cover and keep warm in a low oven until it’s time to take it to the potluck. Be sure to bring a large spoon so everyone can ladle extra onion-cranberry sauce over their meat.
Variations & Tips
If you prefer a slightly less sweet brisket, stir 1/4 cup water or low-sodium beef broth into the cranberry sauce before spreading it on, which will thin the glaze and soften the sweetness without adding extra ingredients to the list. For a bit more savory depth, you can choose a reduced-sodium onion soup mix or use half the packet on a smaller (3-pound) brisket. If you like spice, serve the finished brisket with hot mustard or prepared horseradish on the side rather than adding heat directly to the pan, so everyone at the potluck can season their own plate. This same method also works with a smaller brisket—just reduce the baking time to around 3 hours and start checking for tenderness earlier. Leftovers reheat beautifully: place slices back in the pan with the sauce, cover tightly with foil, and warm in a 275°F (135°C) oven until hot. You can also shred the leftover meat, mix it with the extra glaze, and use it as a filling for sliders or baked potatoes for an easy second meal.
