Objective
By the end of this lesson, you will understand the science behind croutons and be able to make your own homemade croutons.
Materials and Prep
- Bread slices
- Olive oil
- Seasonings (e.g. garlic powder, dried herbs)
- Baking sheet
- Oven
- Knife
Prior knowledge: Basic understanding of the properties of matter and chemical reactions.
Activities
Preheat the oven to 350°F (175°C).
Using a knife, cut the bread slices into small cubes or desired crouton shapes.
In a bowl, mix the bread cubes with olive oil and your choice of seasonings. Toss until all the bread cubes are coated.
Spread the coated bread cubes evenly on a baking sheet.
Bake in the preheated oven for about 10-15 minutes, or until the croutons turn golden brown and crispy.
Remove from the oven and let them cool before using or storing.
Seventh Grade Talking Points
Chemical reactions occur when substances combine or break apart to form new substances. In this case, the heat from the oven causes the bread to undergo a chemical reaction, transforming it into crispy croutons.
Olive oil acts as a catalyst in this chemical reaction, helping to transfer heat to the bread and making it crispy.
Seasonings, such as garlic powder or dried herbs, add flavor to the croutons and can enhance the overall taste of a salad or soup.
The browning and crisping of the bread cubes is a result of the Maillard reaction, which is a chemical reaction that occurs between amino acids and reducing sugars when exposed to heat. This reaction creates the desirable texture and flavor of croutons.
Croutons can be made with different types of bread, and experimenting with different seasonings and flavors can lead to unique and personalized crouton creations.