The Best Burger Topping

  • Author: Bri McKoy


  • 1 TBS olive oil
  • 2 TBS butter, divided 
  • 1 tsp salt (1/2 tsp salt if your butter is salted)
  • 2 sweet onions, halved and thinly sliced 


  • 8 oz. Shiitake or Baby Bella Mushrooms, sliced
  • 1 tsp Magic Mushroom Powder or 1 tsp Chili Powder


  1. In large sauté pan over medium high heat, add olive oil and 1 TBS butter. Once butter is melted, add onions (and mushrooms if using). Allow to cook on medium heat for 5 minutes. 
  2. After 5 minutes lower the temperature to low. Add salt, additional tablespoon of butter and stir to combine. These will cook low and slow to perfectly caramelize for about 25-30 minutes. Stir every 5-8 minutes. 
  3. The end result will be melt-in-your-mouth, buttery, golden brown onions. 


If you are making this topping for more than 4 people, double the recipe! Be sure to use a large sauté pan. The cooking time will take a bit longer, about 45 minutes. But this is so worth the wait! 

To add extra flavor, add 1 tsp Magic Mushroom powder, Chili powder, or Paprika when you add the salt!