This is an answer for Germany, which is probably not applicable to other European countries.

I cannot answer where to find such universities, since no equivalent to SLACs exist in Germany. However, I can say where to find teaching focussed jobs in Germany:

1. Many of the rather teaching focussed universities are calles universities of applied sciences or Fachhochschulen. There are quite a lot of them with many open positions. (Note that there are quite specific conditions you need to have to be eligible to be hired, see e.g. this question. And note that the pure focus on teaching is in the process of been given up and much more research is being done.)
2. As I guess is the case in many European countries, Germany also has many private universities. These are quite often ratger teaching focussed.
3. There are some pure teaching position in all kinds of public universities. Look for positions called Akademischer Rat or Lehrkraft für besondere Aufgaben. Requirements vary widely, and research might be a requirement. And often people are being hired that are well-known to the university.

Academic job posting in Germany (at least for 1 and 2) can usually be found on zeit.de.

This is an answer for Germany, which is probably not applicable to other European countries.

I cannot answer where to find such universities, since no equivalent to SLACs exist in Germany. However, I can say where to find teaching focused jobs in Germany:

1. Many of the rather teaching focused universities are called universities of applied sciences or Fachhochschulen. There are quite a lot of them with many open positions. (Note that there are quite specific conditions you need to have to be eligible to be hired, see e.g. this question. And note that the pure focus on teaching is in the process of been given up and much more research is being done.)
2. As I guess is the case in many European countries, Germany also has many private universities. These are quite often rather teaching focused.
3. There are some pure teaching position in all kinds of public universities. Look for positions called Akademischer Rat or Lehrkraft für besondere Aufgaben. Requirements vary widely, and research might be a requirement. And often people are being hired that are well-known to the university.

Academic job posting in Germany (at least for 1 and 2) can usually be found on zeit.de.