Vamos a asar verduras.

Vamos a + infinitive is a very common way to talk about the near future in Spanish, much like be going to in English.

So:

• Vamos a asar verduras = We’re going to roast/grill vegetables
• Asaremos verduras = We will roast/grill vegetables

Both are correct, but vamos a asar often sounds a bit more immediate, conversational, or planned.

This is part of a fixed future structure:

• ir + a + infinitive

Here:

• vamos = we go / we are going
• a = the linking preposition required by this structure
• asar = the infinitive verb

So you should learn vamos a asar as one unit meaning we’re going to roast/grill.

Grammatically, vamos is the nosotros form of ir in the present tense, so by itself it can mean we go or let’s go, depending on context.

But when it is followed by a + infinitive, it usually forms the near-future expression:

• vamos = we go
• vamos a cocinar = we’re going to cook
• vamos a asar = we’re going to roast/grill

So in this sentence, it is not really understood as a literal movement verb.

Spanish often leaves out subject pronouns because the verb ending already tells you who the subject is.

• vamos already means we
• so nosotros vamos a asar verduras is possible, but usually unnecessary

You might include nosotros only for emphasis, contrast, or clarity.

Asar means to roast or to grill, depending on the context.

For vegetables, it can refer to cooking them with dry heat, for example:

• in the oven = roast
• on a grill / barbecue = grill

It is different from:

• hervir = to boil
• freír = to fry
• cocer = to cook / boil
• hornear = to bake

So asar verduras is specifically about roasting or grilling them, not just cooking them in a general way.

In everyday Spanish, especially in Spain, verduras is the usual word for vegetables in a food context.

Vegetales does exist, but it is often:

• more formal
• more scientific
• broader, sometimes closer to plants or plant-based things

So in ordinary speech, if you are talking about food, verduras is the more natural choice.

Spanish often omits the article when speaking about things in a general or indefinite way.

So:

• Vamos a asar verduras = we’re going to roast some vegetables / vegetables in general

If you said:

• Vamos a asar las verduras

that would usually mean the vegetables — specific vegetables already known from the context, such as the ones you bought earlier or the ones on the counter.

Yes, but it changes the nuance.

• verduras usually means vegetables in a general, everyday sense
• verdura can be used as a mass noun, similar to vegetable matter or veg, depending on context

For a normal meal context, verduras is very natural.
Using the plural often sounds more idiomatic when talking about cooking different vegetables.

No, there is no written contraction.

You still write:

• vamos a asar

not anything shortened.

In natural speech, the two a sounds may run together smoothly, but both are still there. Native speakers simply pronounce them fluidly.

A simple English-friendly approximation is:

BAH-mos ah ah-SAR ber-DOO-rahs

A few useful pronunciation notes for Spain:

• v in vamos sounds very similar to Spanish b
• r in verduras is tapped lightly
• the d in verduras is often softer than an English d
• s in asar is a normal s sound

A more detailed pronunciation is roughly:

[ˈbamos a aˈsaɾ βeɾˈðuɾas]

Not normally.

Vamos a asar verduras usually means We’re going to roast vegetables.

If you want Let’s roast vegetables, Spanish more naturally says:

• Vamos a asar verduras in some contexts, especially in speech, can sometimes feel close to let’s
• but the clearest direct form is often:
  • Asemos verduras = Let’s roast vegetables

Still, in everyday conversation, vamos a + infinitive can sometimes overlap with a suggestion, depending on tone and context.

After vamos a, the infinitive normally comes first, and then its object follows:

• vamos a asar verduras
• vamos a comer paella
• vamos a preparar la cena

So verduras is the direct object of asar.

This is the standard and natural word order.

Yes, very natural.

A speaker from Spain would easily say:

• Vamos a asar verduras

It sounds like normal everyday Spanish and is exactly the kind of sentence you might hear when talking about lunch, dinner, or a barbecue.