Baked Pasta with Sausage and Baby Portobello Mushroom White Sauce recipe.

Ingredients
1 pound penne pasta
3 tablespoons extra-virgin olive oil, divided
1 pound bulk Italian sausage
1 pound cremini mushrooms, sliced
3 cloves garlic, minced
1 1/2 cups heavy cream
1/4 teaspoon salt, or to taste
1/4 teaspoon cracked black pepper
1/2 cup grated Parmesan cheese
1 (8 ounce) package shredded whole milk mozzarella

Directions
Preheat the oven's broiler and set the oven rack about 6 inches from the heat source.
Bring a large pot of lightly-salted water to a boil; cook the penne uncovered, stirring occasionally, until tender yet firm to the bite, about 11 minutes. Drain and return to the pot.
Meanwhile, heat 1 tablespoon of the olive oil in a large skillet over medium-high heat. Cook and stir the sausage in the hot oil until crumbly and no longer pink, about 7 minutes: remove from the skillet, leaving the fat in the pan, and set aside. Pour the remaining 2 tablespoons of olive oil into the skillet and add the mushrooms and garlic. Cook and stir until the mushrooms have browned and begun to release their liquid, about 5 minutes more. Return the sausage to the skillet and pour in the heavy cream. Season with salt and pepper and return to a simmer, cooking until the sauce begins to thicken, about 5 minutes more. Pour the sauce over the pasta and stir. Pour into a 9x13-inch baking dish and sprinkle with mozzarella cheese.
Broil in the preheated oven until the mozzarella cheese is bubbly and golden brown, 5 to 7 minutes.