Can you tell we love portobello mushrooms? They provide such a deep umami flavor and tonight they're the perfect base for vibrant Mediterranean flavors. Smarts: You can definitely scale up and make more of these. Bake them all off and then freeze them individually for easy reheating later.
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 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. Lightly salt and pepper and then spoon in pepper and cheese filling into mushrooms. Cover with foil and cook until mushroom is tender, 5 to 7 minutes.
Warm up buns in the oven. Assemble sandwiches with stuffed mushrooms, tartar sauce, and sliced tomatoes. Enjoy with kale chips!