Creating your Slow Cooker Chicken Marsala Delight can be easily achieved by following these straightforward steps:

1. Prepare Chicken: Season the chicken thighs with salt and pepper on both sides.
2. Sear Chicken (Optional): In a skillet over medium heat, add olive oil and sear the chicken thighs for about 3-4 minutes per side until browned. This step adds extra flavor but can be skipped if preferred.
3. Layer Ingredients: Place the sliced mushrooms, chopped onion, and minced garlic in the bottom of the slow cooker. Then, layer the seasoned chicken thighs on top.
4. Add Liquids: Pour the Marsala wine and chicken broth over the chicken, ensuring all pieces are submerged.
5. Season: Sprinkle thyme and oregano over the mixture, giving it a hearty flavor that will infuse during cooking.
6. Cook: Cover the slow cooker and set it to low for 4-6 hours or high for 2-3 hours, depending on your schedule.
7. Check Chicken: Ensure the chicken is cooked through and tender; it should easily pull apart with a fork.
8. Thicken Sauce (Optional): If a thicker sauce is desired, remove 1 cup of the cooking liquid, whisk in cornstarch, return to pot, and cook on high for an additional 15-20 minutes.
9. Garnish: Once ready, stir the dish, garnish with fresh parsley, and adjust seasoning if needed.

These steps will lead you to a wonderfully aromatic and tasty meal that promises satisfaction!