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12 ounces dry spaghetti or thin spaghetti
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1 cup salted butter, melted
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4 garlic cloves, finely minced, or approximately 1 tablespoon prepared minced garlic
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2 tablespoons dried Italian seasoning or a dried parsley-and-herb blend
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2 1/2 cups hot water
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Salt, to taste, if needed
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Black pepper, to taste, if desired
The butter, garlic, herbs, and water form the seasoned liquid that cooks the spaghetti in the oven. The pasta absorbs moisture as it softens, while the butter and seasonings provide flavor.
Because salted butter already contains salt, additional seasoning should be added carefully. It is easier to adjust the finished dish than to correct pasta that has become excessively salty.
Choosing the right pasta
Spaghetti is the traditional choice for this version because the long strands can be broken to fit the casserole dish. Thin spaghetti can also be used, although it may soften more quickly.
Other pasta shapes may behave differently. Short shapes such as penne or rotini have different thicknesses and surface areas, so they may not cook at precisely the same rate or absorb liquid in the same way.
For the most predictable result, begin with spaghetti and follow the recommended cooking method before experimenting with alternatives.
Selecting the butter
Butter is the main source of richness in this dish. It coats the pasta and helps carry the flavors of the garlic and herbs.
Salted butter is convenient because it contributes seasoning as well as richness. Unsalted butter is also an option, but the cook will need to adjust the salt separately.
For a lighter flavor, the butter quantity can be adjusted during experimentation, although changing the fat-to-liquid ratio may affect the final texture. Making large changes to the amount of butter or water at the same time can make it harder to determine why a batch turned out differently.
Fresh garlic or prepared garlic?
Fresh garlic gives the dish a pronounced, savory aroma. Finely mincing it helps distribute the flavor throughout the butter mixture.
Prepared minced garlic is a practical alternative when time is limited. Its flavor may differ slightly from freshly cut garlic, but it can still provide a useful shortcut.
Garlic should be distributed evenly through the liquid rather than left in one concentrated area. This helps each portion receive a more balanced amount of seasoning.
Choosing dried herbs
Dried Italian seasoning typically contains a mixture of herbs such as oregano, basil, thyme, or rosemary, although blends differ by brand.
A parsley-based dried herb mixture can also be used for a milder flavor.
Because dried herbs are concentrated, they can provide considerable aroma without requiring large quantities. If the blend contains additional salt or other seasonings, taste considerations may change.
For a fresh finish, chopped parsley can be added after baking. Fresh herbs are especially useful when the dish is served alongside rich foods because their brighter flavor provides contrast.
Step-by-Step Instructions for the Best Results
Step 1: Prepare the oven and baking dish
Preheat the oven to 400°F (200°C).
Choose a baking dish large enough to accommodate the spaghetti and liquid without overflowing. A rectangular casserole dish approximately 9 by 13 inches is suitable for the original quantity.
Lightly grease the dish with a small amount of butter or cooking spray if appropriate for the dish's material. This can make serving and cleaning easier.
Make sure the dish is rated for oven use and is not exposed to sudden temperature changes that could damage the material.
Preparing the oven and dish before handling the ingredients makes the assembly process more organized.
Step 2: Arrange the spaghetti
Break the dry spaghetti in half so the strands fit comfortably inside the baking dish.
Spread the pasta across the bottom in an approximately even layer. The strands may overlap, but try to avoid creating one dense bundle.
An even arrangement helps the liquid reach more of the pasta. If the strands are heavily concentrated in one area, they may cook unevenly, leaving some noodles softer than others.
Do not worry if the dry spaghetti does not lie perfectly flat. The noodles will soften during baking and become easier to separate.
Step 3: Prepare the garlic butter mixture
Melt the butter and transfer it to a bowl or large measuring jug.
Add the minced garlic, dried herbs, and black pepper if using. Stir until the ingredients are distributed throughout the butter.