Oven-Baked 5-Ingredient Chicken Marengo

Food history is packed with dishes born out of sheer necessity, but few carry the cinematic flair of Chicken Marengo.

Legend has it that after the Battle of Marengo in 1800, Napoleon Bonaparte’s chef, Dunand, found himself cut off from his supply wagons. Scavenging the Italian countryside, he gathered whatever he could find: a chicken, a few tomatoes, garlic, mushrooms, and even crayfish and fried eggs. He tossed them into a skillet with a splash of cognac, creating a dish so beloved by the general that it became a mandatory post-battle tradition.

While the original rustic scramble included some eccentric additions, the heart of the dish relies on the spectacular pairing of tender poultry, earthy mushrooms, and a rich tomato base.

To bring this historic comfort food into the modern kitchen without a mountain of pots and pans, we’ve stripped the ingredient list down to its absolute essentials and moved the entire process to the oven.

Why the Oven-Baked Method Wins

Traditional recipes require you to stand over a splattering stovetop, searing chicken and simmering a reduction. By transitioning this to a covered casserole or Dutch oven baker, you unlock two massive advantages:

1. Effortless Emulsion: The steady, indirect heat of the oven allows the natural chicken juices to slowly combine with the tomato juices, creating a velvety sauce without any added thickeners.

2. Deep Flavor Infusion: Instead of just coating the outside, the aromatic garlic and earthy mushroom flavors bake deep into the meat, ensuring every single bite is succulent rather than dry.

The 5-Ingredient Pantry Checklist

To pull this off with just five main components, quality matters. Because we are bypassing a complex spice rack, we lean on high-impact ingredients to do the heavy lifting.

• Chicken: 2 lbs of boneless, skinless chicken thighs or breasts. (Thighs stay incredibly juicy during a bake, but breasts work beautifully if cut into thick, even cutlets).

• Canned Diced Tomatoes: One 14-oz can of high-quality, fire-roasted or garlic-infused diced tomatoes (with their juices).

• Fresh Mushrooms: 8 oz of cremini (baby bella) mushrooms, thickly sliced. They hold their structure much better than white buttons.

• Garlic: 4 to 5 large cloves, thinly sliced rather than minced, to give sweet, mellow pops of flavor throughout the bake.

• White Wine or Chicken Stock: 21​ cup of dry white wine (like Pinot Grigio or Sauvignon Blanc) to deglaze and add brightness. If you prefer to cook without alcohol, a rich, low-sodium chicken stock works perfectly.

Note: Salt, pepper, and a splash of cooking oil are considered kitchen staples and aren't counted toward the five ingredients!

The Step-by-Step Method