We featured another portobello burger in 2019, and many community members loved the savory flavor of these mushrooms when served as a burger. This version includes crispy bacon and creamy avocados. Smarts: If you can’t find a small watermelon and don't want to buy a large one, buy pre-sliced watermelon or sub another fruit. Cooking methods: This recipe includes instructions for using the grill or oven. Select your preferred method.
Heat grill to 425F / 218C degrees with one side over direct heat and one side over indirect heat. Clean grates and brush with some oil.
While grill heats, heat a skillet over medium heat. Fry bacon until crisp. Transfer to a paper towel-lined plate.
Brush portobello mushrooms with oil and season generously with some salt and pepper. Grill mushrooms over high heat until grill marks show on both sides. Move to indirect heat, close grill, and cook until tender, 3 to 5 minutes more. Toast hamburger buns on grill.
Spread the bottom of the burger buns with mashed avocado. Top with bacon and mushrooms.
Serve burgers with watermelon and chips on the side. Enjoy!
Prep
Mushrooms - Remove stems and scrape out gills from mushrooms. (Can be done up to 3 days ahead)
Watermelon - Slice into wedges.
Avocados - Mash avocados with lime juice and hot sauce. Season with some salt and pepper.
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Heat oven to 425F / 218C degrees. Line a sheet pan with some foil or brush with some oil.
Spread portobello mushrooms out on one side of sheet pan. Brush with cooking oil and season generously with some salt and pepper on both sides. Leave them with hollow side facing up. Spread bacon out in a single layer on second side of sheet pan. (Use two sheet pans if needed to prevent crowding.)
Transfer mushrooms to oven and roast for 10 minutes. Turn mushrooms (note: If they released moisture while cooking, drain off excess water and use paper towels or dish towels to pat the mushrooms dry; likewise, if the bacon release a lot of grease, drain off excess grease). Return mushrooms and bacon to oven and continue roasting until mushrooms are tender, 6 to 10 minutes more.
Toast hamburger buns.
Spread the bottom of the burger buns with mashed avocado. Top with bacon and mushrooms.
Serve burgers with watermelon and chips on the side. Enjoy!