Mushroom Sliders

By Sarah Pryor

4.0 / 5

10min

15min

See on AllRecipes

1 pound lean ground beef or more to taste
1 large egg
1 small onion finely chopped
1 cup mushrooms finely chopped
1 teaspoon ground black pepper
½ teaspoon garlic salt
to taste salt
6 portobello mushrooms or more to taste
1 green bell pepper halved and seeded
1 red bell pepper halved and seeded
1 yellow bell pepper halved and seeded