Set your oven to 350°F (175°C) and let it warm up while you prep. Gather a baking dish about 9 by 13 inches (the standard rectangular ceramic or glass one most people have). Pat your chicken thighs completely dry using paper towels—this matters more than you'd think because moisture prevents browning and keeps the chicken from developing that appealing finish. Wet chicken steams instead of sears, which affects the final texture.

Scatter your chopped onion across the bottom of the baking dish and add the minced garlic. Place the butter in the center of the dish. Slide this into the preheated oven for about 12-15 minutes. You're looking for the onion and garlic to soften and become fragrant, with some golden-brown edges developing on the onion pieces. Check at the 12-minute mark—different ovens vary, and you want to catch it before anything burns. If the edges are browning too quickly, stir gently and continue cooking. This step builds flavor through gentle caramelization. The butter melts and absorbs the aromatic compounds from the onion and garlic, creating a flavorful base that will infuse your rice.

While the aromatics cook, combine your paprika, thyme, garlic powder, onion powder, salt, and black pepper in a small bowl. Whisk together with a fork until evenly distributed. This is your chicken rub, and mixing it ahead means you're not fumbling with multiple jars when you need to work quickly. If you're watching your sodium intake, start with ½ teaspoon salt and taste the final dish before adjusting. Store-bought broth can be quite salty, and you may not need the full amount.

Pat your dried chicken thighs again to make absolutely sure they're dry. Sprinkle your spice blend evenly on both sides of each thigh, pressing gently so the seasonings adhere. Don't be shy—this is where all your flavor comes from. The spices should coat the surface visibly.

Remove the baking dish from the oven. The onions should be soft and fragrant, and the butter should be melted and beginning to brown slightly. Pour in your uncooked white rice and stir well, making sure every grain gets coated with butter and mingles with the softened onion and garlic. This step, called "toasting" the rice in fat, helps the grains stay separate and fluffy rather than clumping together. This takes about 2-3 minutes of gentle stirring. You should smell something warm and inviting—that's the signal you're doing it right.

Arrange your seasoned chicken thighs directly on top of the rice, spacing them out so they're not touching. They don't need to be perfectly arranged—just try to distribute them evenly across the dish. This matters because air can circulate around each piece, promoting even cooking. Pour the hot chicken broth around (not over) the chicken thighs, then add the hot water. The liquid should come up about three-quarters of the way up the chicken. You're not covering the chicken completely—you want some of it exposed to the oven's dry heat so it can develop a nice surface. At this point, your dish looks humble, but trust the process. The magic is about to happen.

Cover the baking dish tightly with aluminum foil and slide it into the oven. Set a timer for 30 minutes. During this covered phase, steam circulates inside, cooking the rice and chicken gently without evaporation. The foil is essential—without it, too much liquid escapes as steam and your rice ends up undercooked. This is your time to breathe. Set the table, help with homework, or just sit quietly with your coffee. The oven is doing the work now.

After 30 minutes, carefully remove the foil (watch for steam escaping). The rice should be mostly tender, and the liquid level should have reduced significantly. If you want extra-crispy chicken skin (well, the surface of skinless thighs, which gets a nice golden finish), lightly spray the chicken with cooking oil now. This step is entirely optional, but it does give the finished chicken a more appealing appearance. Return the uncovered dish to the oven and bake for another 18-22 minutes. You're waiting for the remaining liquid to be almost completely absorbed. The rice should look tender, and you should be able to see some light browning on the rice around the edges. A few grains at the bottom might even have a light golden crust, which adds wonderful texture (this is called the "socarrat" in Spanish cooking—it's desirable). The chicken is done when you poke it with a fork and it shreds easily. It should register 165°F on an instant-read thermometer at the thickest part.

Remove from the oven and let the dish sit, uncovered, for 5 minutes. This brief rest allows residual heat to finish cooking the center of the thighs and lets the rice settle. It also makes plating easier because you won't burn yourself on steam. While it rests, chop your fresh parsley or thyme if you're using it. Remove the chicken thighs and set aside on a serving plate. Use a fork to gently fluff the rice, breaking up any clumps that may have formed. The rice should look fluffy and individual, not mushy. Return the chicken thighs to the rice, sprinkle with your fresh herbs, and serve immediately.