Caramelized Onions and Mushroom, Great for Burgers & Grilled Veg
This caramelized onions and mushroom is perfect for burgers, steak, and grilled veggies. Just 4 ingredients, how-to video & step-by-step photos included!
Ingredients
- 1 large yellow onion sliced
- 8 oz mushrooms baby bella or white, sliced (227 grams)
- 2 teaspoons olive oil
- ¼ teaspoon salt
Instructions
- Slice: Cut the onion into halves, peel off the skin, then slice it thinly into 0.25 to 0.5 inches (0.6 to 1.3 cm). See video or post above for a demonstration.Thinly slice the mushrooms into 0.4 inch (1 cm) slices.1 large yellow onion, 8 oz mushrooms
- Add onions first: Heat a wide non-stick pan / cast iron skillet over medium heat and add the olive oil. Once the oil is hot (after about 30 seconds), add the onions. Stir occasionally for about 5 minutes to sautée. Be careful not to burn them by turning down the heat if necessary.2 teaspoons olive oil, 1 large yellow onion
- Add mushrooms: Once the onions become golden brown, add the sliced mushroom. Let it cook uncovered for another 20-25 minutes while stirring from time to time to prevent burning. Turn the heat to low if it starts to burn too quickly.8 oz mushrooms
- Splash (if necessary): If it starts to look dry, splash 1 Tablespoon of water to deglaze the pan. Repeat as necessary, but not too often (for me it took about 5 Tablespoons). In general, you want to be able to stir them without anything sticking to the pan, but you do not want liquid in your pan so that the onions can caramelize instead of being steamed.
- Taste test: This dish is done when the onions turn dark brown and there is no crunch to them anymore. If they still taste a bit crunchy, cook a bit longer to let them fully caramelize.
- Salt: Sprinkle the salt, mix, then turn the heat off immediately. Garnish with parsley or thyme if desire. Enjoy!¼ teaspoon salt
Notes
Storage, Meal Prep, and Freezing Notes:
- Storage: Store in an airtight container in the fridge for up to 5 days. Although kudos to you if you could keep this for 5 days because I always end up finishing them so quickly since it's so delicious!
- Meal prep: It makes this caramelized mushroom & onion perfect to batch-cook at the weekend when you have more time. You will be super excited for your next meal just thinking about how much flavor these caramelized mushrooms pack!
- Freezing: Freeze in an air-tight container for up to 3 months. To heat up, just give them a quick stir fry in a pan. You can also microwave them when pressed for time.