Portobello Mushroom and Caramelized Onion Sliders

Name: Portobello Mushroom and Caramelized Onion Sliders
Prep time: 10 min
Cook time: 45 min
Total time: 55 min
Cuisine: American
Ingredients: 1/2 cup balsamic vinegar; 3 tablespoons Dijon mustard; 2 tablespoons olive oil; 2 portobello mushrooms; Salt; 2 cups sliced onion; 2 tablespoons balsamic vinegar; 1/4 cup vegan mayo; 2 tablespoons Dijon mustard; 2 tablespoons maple syrup; Buns (- I used Pamela's gluten free pizza mix)

Instructions

Prep:10minCook:45min

These sweet and savory Portobello Mushroom and Caramelized Onion Sliders will have you wanting more! Portobello mushrooms marinated in balsamic vinegar and Dijon mustard with sweet caramelized onions on your favorite bun, what's not to love!

Updated at: Sat, 12 Sep 2026 08:35:35 GMT