Vegan Oven-Baked Steak
Tender beef baked in an oven bag with soft, caramelized onions that have been sweetened and marinated. The meat steams gently in its own juices while spices infuse throughout, creating a complete one-pan dish. Serve with crusty bread or rice to soak up the savory juices. This version uses the oven bag method for hands-off cooking and minimal cleanup, perfect for weeknight dinners or feeding a crowd without fuss.
Ingredients
- 4 onions, sliced into strips
- 1 tablespoon sugar
- 2 ¼ lb beef or steak, cut into thick slices then halvedpork1:1substitution
pork shoulder or cutlets work well, may need additional 15-20 minutes cooking time
Full guide → - 2 teaspoons salt
- 1 pinch black pepper
- ½ teaspoon chimichurrithyme0.5:0.5substitution
dried thyme provides herbal notes if chimichurri unavailable
- ½ teaspoon sweet paprika
- ½ teaspoon oregano
- 2 tbsp vegetable oil
- 1 oven bag, 41x13"
Instructions
- 1
Slice onions into strips. Toss with sugar until incorporated, then cover with water and marinate for 1 hour.
- 2
Cut meat into thick slices, then halve each slice. Season thoroughly with salt, pepper, chimichurri, paprika, and oregano, massaging spices in with your hands.
- 3
Drain marinated onions and toss with vegetable oil in a dry bowl.
- 4
Spread oiled onions in an oven bag to form a base, then arrange seasoned meat over top.
- 5
Seal bag and place in a baking dish. Pierce all over with a toothpick to allow steam to escape.
- 6
Bake at 400°F for about 90 minutes, until meat is tender.
- 7
Carefully cut open the bag and serve.
Tips
Marinating onions in sugar water for the full hour develops natural sweetness and softness essential to the dish's balance against seasoned meat.
Pierce the bag evenly with a toothpick rather than making a large slit to control steam release and keep the meat moist throughout cooking.
Open the bag away from your face when done to avoid burns from escaping steam.
Good to Know
Refrigerate leftovers in an airtight container for up to 3 days. Meat and onions can be reheated gently in a covered pan with a splash of water.
Onions can be marinated and refrigerated overnight. Season meat up to 2 hours before baking. Do not assemble the bag until ready to bake.
Serve immediately with crusty bread, rice, or potatoes to absorb the pan juices. A simple green salad balances the richness of the meat.
Common Mistakes
Do not skip the onion marinating step to avoid tough, bitter onions that won't balance the meat.
Do not omit the toothpick holes to avoid the bag bursting from steam pressure.
Do not use a torn or low-quality oven bag to prevent leaks and uneven cooking.
Substitutions
pork shoulder or cutlets work well, may need additional 15-20 minutes cooking time
Full guide →FAQ
Can I use a different cut of meat?
Yes. Tougher cuts like chuck or brisket may need the full 90 minutes or longer; tender cuts like sirloin may cook faster. Check doneness by piercing the bag with a fork.
What if my oven is smaller or stronger?
Cooking time varies by oven power. Start checking at 75 minutes. Meat is done when fork-tender. If browning too quickly, lower temperature slightly and extend time.
How long can I keep leftovers?
Refrigerate in an airtight container for up to 3 days. Freeze for up to 2 months. Reheat gently in a covered pan over low heat with a splash of water to prevent drying.