01 -
Using a paring knife, gently carve skull faces into the cut side of each mushroom. Set aside for sautéing.
02 -
Fill a large pot with water, season generously with salt, and set on the stove to bring to a boil.
03 -
In a large nonstick skillet over medium heat, melt 2 tablespoons butter with olive oil. Arrange mushrooms cut side down, ensuring faces are up. Avoid crowding; work in batches if required. Cook until undersides are caramelized and golden brown.
04 -
Flip mushrooms and cook no longer than one minute. Remove from the skillet and set aside on a plate.
05 -
Add remaining 1/2 tablespoon butter to the same skillet. Once melted, add diced onion and cook over medium-low heat until soft and translucent, around 5 minutes.
06 -
Stir Canadian bacon into the onions and cook for 2 to 3 minutes until lightly browned.
07 -
Add minced garlic and dry white wine. Cook, stirring frequently, until wine reduces by half and mixture is thickened and saucy.
08 -
Once water boils, add the squid ink spaghetti. Cook according to package directions until just al dente.
09 -
Add heavy cream to the skillet and cook for 2 to 3 minutes until sauce thickens slightly. Reserve a small amount of parmesan for serving; add remainder to sauce and stir until melted. Season to taste with salt and pepper. Remove from heat and set aside.
10 -
Reserve about 1 cup of pasta water before draining. Drain spaghetti and set aside.
11 -
Return skillet with sauce to low-medium heat. Add drained spaghetti and toss to coat. Add reserved pasta water as needed for desired sauce consistency.
12 -
Gently fold in sautéed mushroom skulls and sprinkle with fresh thyme.
13 -
Divide among serving plates and finish with reserved parmesan. Serve immediately.