Preheat the oven at 220 degree Celsius.
Cut the baguette whit 15-16 cuts, almost right through the bread.
Mix the margarine/butter soft with a fork.
Add the salt in the butter and mix it with a fork.
Squeeze the garlic cloves on the butter, and mix it all together with a fork.
Put the garlic butter in the bread cuts.
Put the baguette in the middle of the oven for 15 minutes.
Take out the bread from the oven and serve it immediately.