Pour olive oil into a saucepan. Add sliced tomatoes and cover the pot with the lid. Cook on low heat for 5 minutes.
Meanwhile, cook pasta according to package directions.
Add a Serrano pepper to the tomatoes and sauté for a minute. Pour the broth over the tomatoes and season with salt, garlic powder, onion powder, and cayenne pepper. Cover and simmer the sauce over low heat for another 5 minutes.
Pour cream into the pot and blend until smooth (or slightly chunky) using an immersion blender.
Tear Lion's Mane Mushroom into small pieces. Melt butter in a separate skillet and sauté for a few minutes. Stir the sauteed mushrooms into the sauce.
Drain the pasta and add it to the sauce; mix to combine. Plate the Lion's Mane Mushroom Pasta and garnish with shaved Asiago cheese and chopped Italian parsley before serving.
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Notes
If you don't have an immersion blender you can use a food processor or Ninja blender. Make sure the sauce is not too hot when you blend it because it will splatter when you unscrew the blade from the cup.
For a milder dish, leave out the Serrano and the cayenne pepper. For an extra spicy dish, slice an additional Serrano pepper and add it to the plated pasta before serving it.
Instead of Asiago cheese, you can sprinkle the pasta with Parmesan cheese.
If foraging Lion's Mane Mushrooms, look for them high up on tree trunks and branches. This is a great beginner mushroom to forage and doesn't have dangerous look-alikes.