Yarın annem kahvaltıya kayısı reçeli koymayacak; onun yerine tahin, pekmez ve gevrek ekmek hazırlayacak.

That is the most typical Turkish word order: Subject + Object + Verb.

So:

• Yarın annem kahvaltıya kayısı reçeli koymayacak
• onun yerine tahin, pekmez ve gevrek ekmek hazırlayacak

Both main verbs, koymayacak and hazırlayacak, come at the end.

Turkish word order is also fairly flexible, so you could move parts around for emphasis. But the verb staying at the end is the most neutral pattern.

Annem means my mother.

It is made from:

• anne = mother
• -m = my

So:

• annem = my mother

Turkish often uses the possessive ending by itself, without a separate word like benim.
So annem already includes the meaning of my.

You can say benim annem, but that usually adds emphasis, like my mother specifically.

Kahvaltıya is kahvaltı + the dative ending -a / -e.

Because kahvaltı ends in a vowel, Turkish adds a buffer y:

• kahvaltı
• kahvaltı + a
• kahvaltıya

Here the dative gives a meaning like for breakfast or at breakfast. In food-related contexts, Turkish often uses this pattern where English would use a preposition.

So kahvaltıya kayısı reçeli koymak is roughly to put / serve apricot jam for breakfast.

Yes, koymak basically means to put, place, set down. But in Turkish it is used very broadly.

In a sentence like this, kahvaltıya ... koymak can mean something like:

• to put on the breakfast table
• to include for breakfast
• to serve at breakfast

So even though the literal core meaning is put, the natural English meaning may be closer to serve or include.

That is very common in Turkish: a general verb like koymak covers situations where English may choose a more specific verb.

It breaks down like this:

• koy- = put
• -ma- = negative
• -(y)acak = future

So:

• koy + ma + yacak
• koymayacak = he/she will not put

The same future ending appears in hazırlayacak:

• hazırla- = prepare
• -(y)acak = future
• hazırlayacak = he/she will prepare

So Turkish does not need a separate word like will. The future meaning is built into the verb ending.

Because Turkish usually expresses tense through verb suffixes, not separate helper words.

In English:

• will not put
• will prepare

In Turkish:

• koymayacak
• hazırlayacak

The future suffix is -acak / -ecek, chosen by vowel harmony.

So the meaning of will is already inside the verb form.

Here kayısı reçeli is an unmarked direct object, which often gives an indefinite / non-specific sense.

So:

• kayısı reçeli koymayacak = she won’t put apricot jam
• kayısı reçelini koymayacak = she won’t put the apricot jam / that specific apricot jam

English often does not show this difference clearly, but Turkish does.

So the version in your sentence sounds more like a general breakfast item, not one specific known jar of jam.

Onun yerine means instead of that or in its place.

It is an idiomatic expression:

• o = that / it
• onun = of that / its
• yerine = in its place / instead

So onun yerine literally points back to the previous idea and says in place of that.

In this sentence, it refers to kayısı reçeli or more generally to the idea of serving that item.

Because Turkish often leaves out a subject when it is already clear from context.

The first clause gives the subject:

• Yarın annem ... koymayacak

In the second clause, Turkish does not need to repeat it:

• onun yerine ... hazırlayacak

The listener naturally understands that the subject is still annem.

This kind of omission is very common and natural in Turkish.

No, they are different structures.

1. kayısı reçeli

This is a noun compound.

• kayısı = apricot
• reçel = jam
• reçeli = jam with the compound ending

Together, kayısı reçeli means apricot jam.

2. gevrek ekmek

This is adjective + noun.

• gevrek = crisp, crunchy
• ekmek = bread

So gevrek ekmek means crisp bread.

A useful clue is that in kayısı reçeli, the second noun has an extra ending, while in gevrek ekmek, it does not.

Those words are objects, not the subject.

The subject is still:

• annem = my mother

So the verb stays singular:

• hazırlayacak = she will prepare

The items being prepared are:

• tahin
• pekmez
• gevrek ekmek

These are listed as direct objects, and like kayısı reçeli, they are unmarked here because they are being mentioned as general items, not specific individually identified ones.

So Turkish is not saying they will prepare. It is saying my mother will prepare them.

The semicolon links two closely related clauses:

1. she will not put apricot jam for breakfast
2. instead, she will prepare other things

It shows a strong connection and a contrast between the two ideas.

You could also express this in other ways, for example with two separate sentences, but the semicolon is a neat written way to join them while keeping the contrast clear.