Heat the skillet: In a large skillet, heat 1 tablespoon of olive oil and 1 tablespoon of butter over medium heat until the butter has melted.
Add the mushrooms: Once the butter is melted, add the 8 oz sliced cremini mushrooms to the skillet. Season with ½ tsp salt and ¼ tsp cracked black pepper. Cook for about 5 minutes, stirring occasionally, until the mushrooms are slightly golden and tender.
Incorporate garlic and tomatoes: Stir in 4 cloves of minced garlic and 2 oz of drained and chopped sun-dried tomatoes. Sauté for an additional 2-3 minutes, allowing the flavor of the garlic to deepen and the sun-dried tomatoes to warm through.
Add seasoning: Sprinkle in 1 tsp Italian seasoning and cook until fragrant, approximately 1 more minute. This step enhances the aromatic profile of your dish.
Deglaze the skillet: Pour in ¼ cup of low-sodium chicken stock to deglaze the pan. Scrape up any browned bits from the bottom of the skillet, which adds flavor to your sauce. Allow the sauce to reduce slightly for a thicker consistency if desired.
Garnish and serve: Taste and adjust the seasoning if necessary. Remove from heat and garnish with 1 tbsp of fresh chopped parsley and, if desired, ½ tsp of red chili pepper flakes for a touch of heat. Serve warm!