For the Casserole Base:

• 1 pound Ground Beef: Ground beef forms the heart of this casserole, providing a rich, savory foundation. Lean ground beef (85% or 90% lean) is a great choice as it minimizes excess grease while still offering plenty of flavor. You can also use ground turkey or ground chicken as leaner alternatives, though they might require a touch more seasoning to achieve a similar depth of flavor. For a richer flavor, consider using ground chuck.
• 1 medium Yellow Onion, chopped: Onion is an aromatic powerhouse that builds a foundational savory flavor base for the casserole. Yellow onions are classic for their balanced flavor, but white or sweet onions can also be used depending on your preference. Chopping the onion into small pieces ensures it cooks evenly and blends seamlessly into the casserole.
• 2 cloves Garlic, minced: Garlic adds a pungent, savory depth that elevates the overall flavor profile. Freshly minced garlic is always recommended for the most intense and vibrant flavor. If you’re in a pinch, you can use garlic powder (about 1 teaspoon), but fresh garlic truly makes a difference.
• 1 (28 ounce) can Crushed Tomatoes: Crushed tomatoes provide the essential tomato base for the casserole, contributing acidity, sweetness, and a rich, saucy texture. Using crushed tomatoes offers a smoother consistency compared to diced tomatoes, which is often preferred in casseroles. You can opt for fire-roasted crushed tomatoes for a smokier depth of flavor.
• 1 (15 ounce) can Tomato Sauce: Tomato sauce further enhances the tomato flavor and contributes to the saucy consistency of the casserole. It helps bind the ingredients together and creates a luscious base. Ensure you use plain tomato sauce, not marinara or pasta sauce which often contain added herbs and seasonings that might clash with the intended flavor profile.
• 1 (15 ounce) can Corn, drained: Corn adds a touch of sweetness, a pleasant pop of texture, and a vibrant color to the casserole. Canned corn is convenient and readily available. Make sure to drain it thoroughly to prevent excess liquid in the casserole. You can also use frozen corn, just thaw it slightly before adding. For a more roasted flavor, you could even use roasted corn kernels.
• 1 (15 ounce) can Kidney Beans, rinsed and drained: Kidney beans bring a hearty, meaty texture and a mild, earthy flavor to the casserole. They also add protein and fiber, making the dish more substantial. Rinsing and draining the kidney beans removes excess sodium and any starchy liquid from the can. You can substitute with other types of beans like black beans, pinto beans, or cannellini beans depending on your preference.
• 1 teaspoon Dried Oregano: Oregano is a classic Italian herb that adds a warm, slightly peppery, and aromatic note to the casserole, complementing the tomato base and ground beef beautifully. Dried oregano is convenient and has a concentrated flavor. You can also use Italian seasoning blend, which typically includes oregano along with other complementary herbs like basil and thyme.
• 1 teaspoon Dried Basil: Basil is another essential Italian herb that provides a sweet, slightly peppery, and fragrant aroma. It brightens the tomato sauce and adds a layer of complexity. Dried basil works well in this casserole. Fresh basil, if you have it, can be added as a garnish after baking for a brighter, fresher flavor.
• 1/2 teaspoon Salt: Salt is crucial for enhancing all the flavors in the casserole and balancing the sweetness of the tomatoes. Adjust the amount of salt to your taste. It’s always best to start with a smaller amount and add more as needed.
• 1/4 teaspoon Black Pepper: Black pepper adds a subtle warmth and spice that complements the other seasonings and enhances the overall flavor profile. Freshly ground black pepper is always preferable for its brighter, more aromatic flavor, but pre-ground black pepper works just fine.

For the Topping (choose one or combine for variations):

• Option 1: Mashed Potato Topping:

  • 4 cups Mashed Potatoes (homemade or prepared): Mashed potatoes create a creamy, comforting, and slightly fluffy topping that contrasts beautifully with the savory casserole base. Homemade mashed potatoes are always a treat, but using prepared mashed potatoes can save time and effort. For homemade mashed potatoes, Russet or Yukon Gold potatoes work well. You can enrich your mashed potatoes with butter, milk or cream, and seasonings like salt, pepper, and garlic powder.
  • 1/2 cup Shredded Cheddar Cheese (optional): Cheddar cheese adds a sharp, cheesy flavor and a golden brown crust when baked. It pairs perfectly with mashed potatoes and the savory casserole base. You can use mild, medium, or sharp cheddar depending on your preference.

• Option 2: Biscuit Topping:

  • 1 (10 ounce) can Refrigerated Biscuits: Refrigerated biscuits offer a quick, easy, and slightly sweet topping that becomes golden brown and slightly crispy when baked. They provide a different textural contrast compared to mashed potatoes. Choose your favorite brand of refrigerated biscuits.
  • 1/4 cup Melted Butter (optional, for brushing biscuits): Brushing melted butter over the biscuits before baking enhances their flavor, promotes browning, and adds a touch of richness. It’s an optional step but highly recommended for extra deliciousness.

• Option 3: Pasta Topping (for a heartier casserole):

  • 8 ounces Cooked Pasta (elbow macaroni, rotini, or shells): Cooked pasta mixed into the casserole base or layered on top adds extra heartiness and turns this into a more pasta-centric dish. Elbow macaroni is a classic choice, but rotini or shells also work well. Cook the pasta according to package directions until al dente.
  • 1 cup Shredded Mozzarella Cheese (optional): Mozzarella cheese provides a mild, melty, and stretchy cheese topping that complements pasta beautifully. It creates a classic cheesy casserole experience.