Best Creamy Portabella Gratin Recipes

POTATO/PORTOBELLO GRATIN

Steps:

• Heat oven to 400 degrees and butter a 9 by 13-inch baking dish and set aside.
• Using a mandolin, V-slicer or the slicing attachment on a food processor, slice the potatoes approximately 1/8-inch thick. (If you don't want to slice all the potatoes at once, slice them one at a time and build the gratin as you go.) Create the first layer by laying the slices in overlapping rows. Once the first layer is down, season lightly with salt and pepper, then scatter with mushroom slices and a couple tablespoons of the cheese. (Don't over-do it on these layers, if you create a barrier between the adjoining potato layers, the gratin won't set.) Continue building layers until you're out of potatoes or out of room to build, but be sure to save 1/2 cup of the cheese for the top.
• Pour 2/3 cup of the half and half over the gratin then spread both hands over the surface and push down to work the air out from the layers. Add remaining liquid only if half and half does not come to the surface when you push down. Sprinkle the gratin with cheese, cover loosely with foil and place in middle of oven for 1 hour. Check for doneness by inserting the point of a paring knife straight into the gratin. If it goes through smoothly, remove the foil, return to oven, and turn on the broiler just long enough to turn the top golden-brown. Remove, and allow to sit at room temperature for 15 to 20 minutes before serving.

PORTOBELLO MUSHROOM GRATIN

Steps:

• Preheat the oven to 400 degrees F (200 degrees C).
• Melt butter in a frying pan over medium heat. Add leeks and celery root and cook for 10 minutes. Add mushroom pieces, 1/2 of the tarragon, and 1/2 of the chives; continue cooking until mushrooms give off liquid, about 6 minutes more.
• Meanwhile, combine bread crumbs and Gruyere cheese in a mixing bowl.
• Add flour to the frying pan with the mushroom mixture. Add cream in a stream and stir until it becomes an even color, about 3 minutes. Add 1/2 of the bread crumb mixture and stir until cheese starts to melt, about 2 minutes. Turn off heat. Transfer mixture to a baking dish and top with remaining tarragon, chives, and bread crumb mixture. Add a small amount of water to moisten the mixture.
• Bake in the preheated oven until the cheese is bubbly, about 10 minutes.
• Use a spatula to scoop portions and serve immediately.

PORTOBELLO GRATIN

Steps:

• Split 6 portobello mushroom caps to make 12 thin rounds. Toss 1 1/4 cups shredded muenster cheese, 1/3 cup breadcrumbs, 2 tablespoons chopped parsley, 1 grated garlic clove, and salt and pepper. Layer the portobello rounds and cheese mixture in a baking dish, making 3 layers of each. Drizzle with 3 tablespoons water, cover with foil and bake at 400 degrees F, 35 minutes. Uncover and bake 8 more minutes.

CREAMY AU GRATIN POTATOES

Steps:

• Preheat oven to 400 degrees F (200 degrees C). Butter a medium casserole dish.
• Layer 1/2 of the potatoes into bottom of the prepared casserole dish. Top with the onion slices, and add the remaining potatoes. Season with salt and pepper to taste.
• In a medium-size saucepan, melt butter over medium heat. Mix in the flour and salt, and stir constantly with a whisk for one minute. Stir in milk. Cook until mixture has thickened. Stir in cheese all at once, and continue stirring until melted, about 30 to 60 seconds. Pour cheese over the potatoes, and cover the dish with aluminum foil.
• Bake 1 1/2 hours in the preheated oven.

RICH AND CREAMY POTATOES AU GRATIN

Steps:

• Preheat oven to 350 degrees F (175 degrees C).
• Place potatoes, garlic, and salt into a large pot, fill with enough water to cover, and bring to a boil. Reduce heat to medium, and simmer the potatoes until tender but not mushy, 8 to 10 minutes. With a slotted spoon, transfer about half the potatoes to a 9x13-inch baking dish.
• Pour half of the cream over the potatoes, season with black pepper and nutmeg, and sprinkle half of the Gruyere cheese onto the mixture. Top with the remaining potatoes; sprinkle again with black pepper and nutmeg. Pour on the remaining cream, and sprinkle with remaining Gruyere cheese.
• Bake in the preheated oven until the cheese topping is crisp and brown on top, about 1 hour.

ROASTED PORTOBELLO AND POTATO GRATIN

Steps:

• Heat oven to 400 degrees. Line a baking sheet with sides with a sheet of parchment. Place mushrooms gill side up on parchment. Thinly slice 3 garlic cloves, and scatter over mushrooms. Place a thyme sprig on each mushroom, drizzle caps with olive oil, salt and pepper, and place in oven until soft and releasing liquid, 10 to 15 minutes. Remove, and allow to cool. Keep oven on.
• Heat 1 tablespoon butter in a skillet, add onions, and sauté over medium-low heat until soft and beginning to color. Add cream and milk, scald, and remove from heat. Use remaining butter to grease a 9-inch gratin dish about 2 inches deep. Rub dish with remaining garlic clove.
• Remove and reserve garlic from mushrooms. Discard thyme. Slice mushrooms 1/2 inch thick.
• Peel and thinly slice potatoes. Place 1/3 of the potatoes in gratin dish, season with salt, pepper and nutmeg, scatter with half the reserved sliced garlic. Arrange half the mushroom slices on top. Repeat layers. Layer last third of potatoes on top. Season with salt and pepper. Pour scalded milk and cream with onions on top. Strew bread crumbs on top.
• Place gratin dish on a baking sheet, and place in oven. Bake about 1 hour, until potatoes are tender and liquid has thickened. If top browns too fast, tent with foil. Allow to stand 10 minutes, then serve.

CREAMY PORTABELLA GRATIN

Steps:

• Heat broiler.
• In saucepot, add 2 broccoli and cauliflower to boiling water; cook 5 minutes.
• Drain.
• In skillet, saute 1 portobello mushroom, cubed, and red bell pepper, in butter 5 minutes.
• Place veggies in a 7-cup casserole dish.
• Microwave spreadable cheese 15 seconds.
• Pour cheese over vegetables.
• Combine Parmesan and parsley; top veggies.
• Broil 2 minutes.