This stuffed portobello sandwich got great reviews as a flavor-packed take on a vegetable burger when it was last featured in 2020. Crispy kale chips are a fun way to get your greens on the side.
Spread kale leaves onto a sheet pan. Use two pans if they’re too packed on one. Toss with olive oil and then bake for 8 to 12 minutes until leaves are crispy. If they start to brown too much at the edges, they’re definitely done! Sprinkle with some salt right out of the oven.
Heat a skillet over medium-high heat. Add cooking oil and then place portobellos cap side up. Sear for 2 to 3 minutes and then flip. Season with some salt and pepper and then spoon bean, pepper, and cheese filling into mushrooms. Cover with foil and cook until mushrooms are tender and filling is heated through, 5 to 7 minutes.
Toast hamburger buns.
Assemble sandwiches with stuffed mushrooms and lettuce leaves. Enjoy with kale chips!