1. Toss red potatoes with 1 tablespoon olive oil, 1/2 teaspoon salt and 1/4 teaspoon pepper. Place in the bottom of a 6-quart slow cooker.
2. Season chicken breasts with 1/2 teaspoon salt and 1/4 teaspoon pepper and drizzle with remaining tablespoon of olive oil. Place in a single layer on top of potatoes.
3. Place lid on top of slow cooker and cook on low for 7 hours, until potatoes are tender and fluffy.
4. In a medium-sized bowl combine the butter, mayonnaise, Parmesan cheese, garlic, oregano, basil, lemon juice, 1/4 teaspoon salt and 1/4 teaspoon pepper. Pour over the chicken, and arrange asparagus along the sides of the chicken. Replace the lid and cook for another 30 to 45 minutes, until the asparagus is fork-tender and the sauce is hot throughout.
5. Using a slotted spoon, remove the asparagus, chicken and potatoes.
6. Make a decadent parmesan sauce: The sauce will have separated, but there is a lot of great flavor in it that you don’t want to lose. Pour it into a measuring cup or other easy to handle container. Using a blender, slowly add in the sauce, blending on high to emulsify the parmesan sauce. In a pinch, you can pour it into a mason jar and shake it up for a quick blend before pouring over the chicken.
Pro tip: To add more texture to your chicken, use seasoned skin-on chicken and sear in a hot pan with olive oil and butter before placing over the potatoes in the slow cooker.
