To create this delectable Creamy Spinach Stuffed Chicken, you’ll need a handful of fresh, flavorful ingredients. We’ve broken down everything you’ll need, including some notes on substitutions and quality to ensure your dish is a resounding success.

• Chicken Breasts: 4 boneless, skinless chicken breasts (about 6-8 ounces each). When selecting chicken breasts, opt for those that are of uniform thickness if possible. This will ensure even cooking. If your chicken breasts are particularly thick, you might consider butterflying them or pounding them slightly thinner to make stuffing and cooking more consistent. Look for chicken that is pink and firm, avoiding any with a greyish tinge or unpleasant odor. For the best flavor and texture, consider using air-chilled chicken if available at your grocery store.
• Cream Cheese: 4 ounces cream cheese, softened. Full-fat cream cheese will provide the richest flavor and creamiest texture for the filling. However, you can use reduced-fat cream cheese if you prefer to lighten up the recipe slightly, though it might not be quite as decadent. Make sure your cream cheese is properly softened at room temperature before you start mixing the filling. This will make it much easier to incorporate with the other ingredients and prevent lumps.
• Frozen Spinach: 10 ounces frozen spinach, thawed and squeezed dry. Frozen spinach is a convenient and cost-effective option for this recipe. It’s important to thoroughly thaw the spinach and then squeeze out as much excess water as possible. Excess moisture will make the filling watery and can prevent the chicken from browning properly. You can thaw spinach in the refrigerator overnight, or quickly thaw it in the microwave using the defrost setting. To squeeze out the water effectively, place the thawed spinach in a clean kitchen towel or cheesecloth and wring it tightly over the sink.
• Mozzarella Cheese: 1 cup shredded mozzarella cheese, divided. Mozzarella cheese provides that classic melty, cheesy goodness that complements the creamy spinach filling perfectly. Part-skim mozzarella will melt well and is a slightly lighter option. For a richer flavor, you can use whole milk mozzarella. We are dividing the mozzarella, using some in the filling and some to top the chicken breasts before baking.
• Garlic: 2 cloves garlic, minced. Fresh garlic is always preferred for its vibrant flavor. Mince the garlic finely to ensure it distributes evenly throughout the filling and infuses the dish with its aromatic essence. If you don’t have fresh garlic, you can substitute ½ teaspoon of garlic powder, but fresh garlic will provide a much more robust flavor.
• Onion Powder: 1 teaspoon onion powder. Onion powder adds a subtle savory depth to the filling, enhancing the overall flavor profile. Make sure your onion powder is fresh for the best flavor.
• Dried Italian Seasoning: 1 teaspoon dried Italian seasoning. Italian seasoning is a blend of herbs like oregano, basil, rosemary, thyme, and marjoram. It brings a wonderful herbaceous and aromatic complexity to the filling. If you don’t have Italian seasoning, you can create your own blend using equal parts of dried oregano, basil, and thyme.
• Salt: ½ teaspoon salt, or to taste. Salt is crucial for enhancing the flavors of all the ingredients. Start with ½ teaspoon and adjust to your preference. Remember that the saltiness of the cream cheese and mozzarella can vary slightly, so taste the filling before stuffing the chicken and adjust seasoning as needed.
• Black Pepper: ¼ teaspoon black pepper, or to taste. Freshly ground black pepper is always recommended for its bolder flavor. Adjust the amount to your preference.
• Olive Oil: 2 tablespoons olive oil. Olive oil is used for searing the chicken breasts, which helps to develop a golden-brown crust and lock in moisture. Extra virgin olive oil is a great choice for its flavor and health benefits. You can also use other cooking oils with a high smoke point, such as avocado oil or canola oil.
• Paprika: ½ teaspoon paprika (optional, for garnish). Paprika adds a touch of color and a very mild smoky flavor when sprinkled on top of the chicken before baking. It’s primarily used for visual appeal but also adds a subtle layer of flavor. You can use sweet paprika or smoked paprika depending on your preference. Fresh parsley, chopped, is another excellent option for garnish, providing a fresh, herbaceous contrast to the rich chicken.