Я разрежу батон и сделаю бутерброды.

In Russian, perfective verbs use their simple non-past forms to express the future.

• разрезать → разрежу = I will cut
• сделать → сделаю = I will make

So this is not present tense in meaning. With perfective verbs, forms like я сделаю and я разрежу normally mean I will do / I will cut.

If you wanted an ongoing or habitual meaning, Russian would usually use the imperfective verb instead.

They come from different aspects and have different meanings.

• резать / режу = to cut, imperfective
  This focuses on the process, repetition, or general action.
• разрезать / разрежу = to cut up / cut through / cut into pieces, perfective
  This focuses on completing the action.

So:

• Я режу батон = I am cutting the loaf / I cut the loaf
• Я разрежу батон = I will cut the loaf (completely / into pieces / through)

In this sentence, the speaker is talking about a completed future action, so разрежу fits well.

Батон usually means a loaf of white bread, often a long loaf. It does not normally mean just any kind of bread in general.

For an English speaker, батон is often best understood as something like:

• a loaf of bread
• a white loaf
• sometimes a baguette-like loaf, depending on context

So Я разрежу батон is specifically about cutting a loaf, not bread in the abstract.

Yes. Both are direct objects, so they are in the accusative case:

• Я разрежу батон → батон is what will be cut
• сделаю бутерброды → бутерброды are what will be made

Because these nouns are inanimate, their accusative forms look like the nominative:

• батон: nominative = accusative
• бутерброды: nominative plural = accusative plural

So the forms do not change here, even though the case is accusative.

Russian has no articles. There is no direct equivalent of a/an/the.

So:

• батон can mean a loaf or the loaf
• бутерброды can mean sandwiches or the sandwiches

The exact meaning depends on context. In this sentence, English might translate it as either:

• I’ll cut a loaf and make sandwiches
• I’ll cut the loaf and make the sandwiches

Russian leaves that to context.

Yes, very often.

Russian verb endings already show the person:

• разрежу = I will cut
• сделаю = I will make

So Разрежу батон и сделаю бутерброды is also perfectly natural.

Including Я can add:

• emphasis
• clarity
• contrast, as in I’ll do it

So in this sentence, Я is not required, but it is completely normal.

Yes. И simply means and, but in this sentence it naturally connects two actions in a sequence:

1. Я разрежу батон
2. и сделаю бутерброды

So the sense is:

• I’ll cut the loaf and then make sandwiches

Russian does not need a separate word like then here, because the sequence is clear from logic and context.

Yes, it is very natural.

Russian often uses сделать for preparing simple food items in everyday speech:

• сделать бутерброды = make sandwiches
• сделать чай can also appear colloquially, though заварить чай is more specific

You could also hear verbs like приготовить, but сделать бутерброды is common, simple, and idiomatic.

Sometimes, yes.

There is a nuance:

• разрежу батон = I’ll cut the loaf through / cut it up
• нарежу батон = I’ll slice up the loaf

If the idea is specifically cuting the bread into slices for sandwiches, many speakers might find нарежу батон especially natural.

But разрежу батон is still understandable and can work, especially if the focus is simply that the loaf will be cut before making sandwiches.

The main stresses are:

• Я разрЕжу батОн и сдЕлаю бутербрОды.

Word by word:

• разрЕжу
• батОн
• сдЕлаю
• бутербрОды

Stress matters in Russian, so it is worth learning these together with the words.

It is plural because the sentence says the speaker will make sandwiches in general, presumably more than one.

• бутерброд = sandwich
• бутерброды = sandwiches

If you wanted the singular, you could say:

• Я разрежу батон и сделаю бутерброд.

That would mean I’ll cut the loaf and make a sandwich.

The plural sounds very natural if the loaf is being cut to prepare several sandwiches.