in this sentence you are using the preposition + whom grammar structure. Whom is considered an object pronoun and is used when asking who will receive the action, which in this case, I believe is, baking those cookies. Hopefully this makes sense and good luck.
The empirical tests conducted in the controlled environment supported the research results. Empirical tests use empirical evidence. Empirical evidence is information created through assumptions.
The nascent corn crops looked very promising in their beginning stages. Nascent means coming into existence.
The delicious and complex flavors of the casserole belie the ease of putting it together. Belie means to give a false impression of something.