01 -
Bring a large pot of water to a boil. Add pasta and cook according to package directions until al dente. Drain and set aside.
02 -
Heat olive oil over medium heat in a large high-sided skillet. Add sliced crimini mushrooms and cook for 3 to 5 minutes until just tender. Remove mushrooms and set aside.
03 -
In the same skillet, add crumbled Italian sausage. Cook over medium heat for approximately 5 minutes, stirring occasionally, until thoroughly cooked. Drain excess fat.
04 -
Add minced garlic, Italian seasoning, red pepper flakes, tomato pasta sauce, and fresh spinach to the skillet with sausage. Stir well and bring to a gentle boil over medium heat. Cook, stirring frequently, for 5 minutes until spinach has wilted to your preference.
05 -
Add the cooked, drained pasta to the skillet. Toss to combine and reheat gently for 1 minute.
06 -
Remove from heat. Season with salt, coarsely ground black pepper, and additional red pepper flakes as desired. Top with reserved cooked mushrooms before serving.