My dad requested this for his birthday dinner instead of going out to a restaurant.

This Oven-Baked 3-Ingredient Sour Cream Onion Chicken is a testament to the power of simple, high-fat ingredients to create a sophisticated, “melt-in-your-mouth” texture. By blanketing boneless, skinless chicken breasts in a thick layer of sour cream and a mountain of thinly sliced yellow onions, you create a self-basting environment where the chicken gently poaches in its own juices. As the sour cream thins and the onions caramelize, they emulsify into a tangy, velvety sauce that rivals any complex French reduction.

Oven Baked 3-Ingredient Sour Cream Onion Chicken

Ingredients:

Step-by-Step Directions:

Step 1: The Casserole Foundation: Preheat your oven to 375°F. Lightly grease a ceramic casserole dish with a little butter or olive oil.

Tip: Pat the chicken breasts bone-dry with paper towels before seasoning. If the chicken is wet, the sour cream will “slide” off during the bake rather than clinging to the meat to form that iconic creamy cap.

Step 2: The Seasoned Layer: If your chicken breasts are very thick, gently pound them to an even thickness. Season both sides lightly with salt and pepper and arrange them in a single layer in the dish, leaving about 1/2-inch of space between each piece for heat circulation.

Step 3: The Tangy Blanket: In a medium bowl, stir the sour cream until it is perfectly smooth. Spread it generously over the top of each chicken breast, ensuring they are completely covered. It is perfectly fine (and encouraged!) for some of the cream to drip down into the bottom of the dish.

Step 4: The Onion Crown: Scatter the thinly sliced onions over the sour cream.

Tip: Aim for a “loose” scatter rather than clumps. Onions that fall into the sour cream pool at the bottom of the dish will soften into a jammy consistency, while the onions on top will catch the dry heat and develop those sweet, caramelized edges.

Step 5: The Foil-Tented Bake: Cover the dish loosely with foil, “tenting” it so it doesn’t touch the sour cream. Bake for 20 minutes. This initial steaming phase ensures the chicken stays succulent and the onions begin to break down.

Step 6: The Golden Finish: Remove the foil and bake uncovered for another 20/30 minutes.

The Safety Check: The chicken is done when the thickest part reaches 165°F. For a professional finish, switch the oven to broil for the final 2/3 minutes to brown the onion tips, but watch them closely as sour cream can burn quickly.

Step 7: The Essential Rest: Let the chicken rest in the dish for 5 minutes.

Tip: During this rest, the sour cream and onion juices will thicken into a rich, pourable gravy. Spoon this “pan sauce” over the chicken just before serving.