La masa creció hasta el punto de que llenó el cuenco.

Yes. In this sentence, masa most naturally means dough or sometimes batter, depending on context.

It is feminine, so it takes la:

• la masa
• una masa

For example:

• la masa del pan = the bread dough
• la masa del pastel = the cake batter / cake mixture

So la masa is simply the dough here.

Creció is the preterite of crecer, and it presents the growth as a completed event in the story.

• La masa creció... = the dough rose / grew
• La masa crecía... = the dough was rising / used to rise

In this sentence, the action reaches a clear result: it filled the bowl. Because the sentence describes a completed sequence with a definite outcome, creció is the natural choice.

The verb is crecer.

In the yo form of the present, you get crezco:

• yo crezco

But in the preterite third person singular, it is:

• él/ella creció

That is a regular preterite form for -er verbs:

• comer → comió
• aprender → aprendió
• crecer → creció

So although crecer has a spelling change in some forms, creció is the normal preterite form.

Hasta el punto de que means to the point that.

It is used to show that something reached such an extent that a result followed.

Structure:

• hasta el punto de que + clause

In your sentence:

• La masa creció hasta el punto de que llenó el cuenco.
• The dough rose to the point that it filled the bowl.

It is a fairly common way to express degree and result, and it sounds a bit more explicit or formal than simpler alternatives.

No, this is correct.

The phrase is a fixed structure:

• hasta el punto de que

Here, de belongs with punto:

• el punto de...

And then que introduces the following clause:

• ...de que llenó el cuenco

So this is not unnecessary de que. It is part of the standard expression.

Not with exactly the same meaning.

• hasta que usually means until
• hasta el punto de que means to the point that

Compare:

• La masa creció hasta que llenó el cuenco.
  This sounds less natural because it suggests the action continued until the bowl became full.

• La masa creció hasta el punto de que llenó el cuenco.
  This clearly means the growth reached such a degree that the bowl ended up full.

So hasta el punto de que is the better choice here.

Yes. A common simpler version would be:

• La masa creció tanto que llenó el cuenco.

This means essentially the same thing:

• The dough rose so much that it filled the bowl.

Another possible phrasing is:

• La masa subió tanto que llenó el cuenco.

That can sound especially natural when talking about dough rising.

Because llenar here is being used transitively: something fills something.

• La masa llenó el cuenco. = The dough filled the bowl.

If you say se llenó el cuenco, that means:

• the bowl filled up

So the focus changes:

• La masa llenó el cuenco.
  The dough is the thing causing the bowl to become full.

• El cuenco se llenó.
  The bowl became full.

Both are possible in Spanish, but they mean slightly different things and focus on different subjects.

Using el suggests a specific bowl that is already known from the context.

• el cuenco = the bowl
• un cuenco = a bowl

If the speaker and listener both know which bowl is meant, Spanish normally uses the definite article:

• llenó el cuenco

If you were introducing it for the first time, un cuenco could be possible in another context.

Cuenco means bowl.

In Spain, cuenco is a perfectly normal word. You may also hear bol, especially for kitchen or serving bowls, since it has been borrowed from English/French-style usage.

Broadly:

• cuenco = bowl
• bol = bowl, often more modern/everyday in some contexts

In a learner sentence like this, cuenco is completely correct and very natural.

The accent marks show the stress and also distinguish these forms in writing.

• creció
• llenó

These are both third person singular preterite forms:

• él/ella creció
• él/ella llenó

Without the accent, the spelling would be incorrect. In Spanish, written accents are part of the standard spelling and often help identify the verb form.

In this sentence, llenó refers back to la masa.

Spanish often leaves out subject pronouns when the verb form makes the subject clear enough from context.

So instead of saying:

• La masa creció hasta el punto de que ella llenó el cuenco

Spanish naturally says:

• La masa creció hasta el punto de que llenó el cuenco

The understood subject of llenó is still la masa.

Crecer is correct and easy to understand, but with dough there are other very common verbs too.

• crecer = to grow / rise
• subir = to rise
• levar = to rise, specifically of dough

For example:

• La masa creció.
• La masa subió.
• La masa levou / ha levado.
  (Forms of levar, though usage can vary by region and context.)

For a learner, crecer is absolutely fine. In baking contexts, subir and levar may sound more specifically connected to dough rising.

It is correct, but hasta el punto de que sounds a little more formal or written than everyday speech.

In casual conversation, many speakers would be more likely to say:

• La masa creció tanto que llenó el cuenco.

So your sentence is good Spanish, but it has a slightly more careful or descriptive tone than the most everyday version.