1-First Step: Preparation and Mise en Place Start by preheating your oven to 375°F (190°C). This temperature is high enough to toast the bread quickly without burning it before the inside dries out. While the oven heats, prepare your baking sheet by lining it with parchment paper. This prevents sticking and makes cleanup much easier. Next, take your day-old bread and cut it into cubes. Aim for sizes between 1/2 inch and 3/4 inch. Uniform sizing is crucial because it ensures all the pieces cook at the same rate. If you have some very small pieces and some large ones, the small ones will burn before the large ones are crispy.

2-Second Step: Coating the Bread Place your bread cubes into a large mixing bowl. Pour the olive oil over the bread. Toss the cubes gently with your hands or a spatula to ensure every piece is lightly coated. If you prefer buttery croutons, you can melt 1/4 cup of butter and use that instead of oil. Once the bread is coated, add the garlic powder, salt, black pepper, and any optional herbs or cheese. Toss again thoroughly. Make sure the seasoning is distributed evenly so you do not get a mouthful of salt in one bite and a bland piece in the next.

3-Third Step: Arranging for Baking Spread the seasoned bread cubes onto your prepared baking sheet in a single layer. It is important not to overcrowd the pan. If the cubes are piled on top of each other, they will steam instead of toast, resulting in soggy croutons. If you have a large batch, use two baking sheets or bake them in batches. Give them plenty of room to breathe. This is the key step for how to make croutons that are truly crispy.

4-Fourth Step: The Baking Process Place the baking sheet in the preheated oven. Set your timer for 10 minutes. This is where patience pays off. Bake the cubes until they are golden brown and crispy. However, do not just walk away. Every oven is different, and some breads brown faster than others. Halfway through the cooking time, around the 5-minute mark, open the oven and give the pan a good shake or stir the croutons with a spatula. This flips the pieces and ensures they brown evenly on all sides. Check them frequently after the 10-minute mark. They can go from golden to burnt very quickly.

5-Final Step: Cooling and Serving Once the croutons are a deep golden color and feel dry to the touch, remove them from the oven. They might feel slightly soft when they first come out, but they will crisp up significantly as they cool. Transfer them to a wire cooling rack or a plate to cool completely. Do not leave them on the hot baking sheet, or they may continue cooking in the residual heat. Once they are cool, they are ready to serve. Toss them into your favorite salad recipe or sprinkle them over a bowl of hot soup.