Child-friendly locations €-€€€

Places I’ve personally visited are marked
Locations on google maps are marked 📍
Brownies & Downies ☑
Haarlem 📍
Brownies, sandwiches, salads and more served by mentally disabled
https://www.browniesanddownies.nl/haarlem
de Dakkas ☑
Haarlem 📍
Modern laid-back lunch spot with great views over the city on top of a parking garage, with plenty vegetarian options
https://www.dedakkas.nl/
House of Pancakes ☑
Haarlem 📍
traditional and modern pancakes with lots of adult options
https://houseofpancakes.nl/
In ‘t goede uur
Haarlem 📍
Cheese-fondue restaurant since 1958
https://www.hetgoedeuur.nl/
Jinlai ☑
Haarlem 📍
All-you-can-eat world restaurant with options ranging from pizza to oysters and from stirfry to froglegs
https://www.jinlai.nl/
Kweekcafe ☑
Haarlem 📍
Vegetarian-centred lunch spot in greenhouses, outside of the city centre, with animals and lots of nature-focused playgrounds
https://kweekcafe.nl/
Meneer Paprika ☑
Haarlem 📍
Combined eco-friendly toy-store and lunch-restaurant where kids can play with a large wooden-train table during lunch
https://meneerpaprika.nl/
Oerkap ☑
Haarlem 📍
Lunch and drinks spot on the river with lots of sand and modern/vegetarian options
http://oerkap.nl/
Pizzabakkers ☑
Haarlem 📍
Pizza restaurant where the kids get play-dough while waiting to make their own pizzas
https://www.depizzabakkers.nl/vestigingen/haarlem-kruisweg/
Theehuis de Haarlemmerhout ☑
Haarlem 📍
Pancakes/lunch-spot in city park with petting-zoo within 50 m
https://dehaarlemmerhout.nl/
Veerkwartier ☑
Haarlem 📍
Laid back lunch and coffee spot on the outskirts of the city with beach and large swim-pond
https://veerkwartier.nl/
Boshut ‘t Panneland ☑
Vogelenzang 📍
Lunch & dinner spot on the south-eastern edge of the Amsterdamse Waterleidingduinen nature reserve with small playground
https://t-panneland.nl/
Brasserie Hoeve Duin en Kruidberg ☑
Santpoort-Noord 📍
Laid back lunch spot near horse-farm with play options outside
https://hoeveduinenkruidberg.nl/
Buitenplaats Plantage ECO ☑
Vogelenzang 📍
Modern lunch spot with laid-back atmosphere and ample vegetarian options
https://buitenplaatsplantage.nl/
Duincafe de Kennemerduinen ☑
Overveen 📍
Lunch/coffee spot with big wooden playground at entrance of nature reserve (Nationaal Park Zuid-Kennemerland)
https://www.np-zuidkennemerland.nl/
Dune ☑
Zandvoort 📍
Classic pancake restaurant with lots of adult options on the northern edge of the Amsterdamse Waterleidingduinen nature reserve. Small outside playground
https://www.duneaandeduinrand.nl/
de Konijnenberg ☑
Heemstede 📍
Classic old pancake restaurant with plenty of adult options near nice forest (Wandelbos Groenendaal)
https://www.dekonijnenberg.nl/
Kraantje Lek ☑
Overveen 📍
Very family-friendly restaurant mainly serving pancakes in the dunes, with a very large playground. Packed in the summer. 
https://www.kraantjelek.nl/
de Oase ☑
Vogelenzang 📍
Pancake restaurant on the eastern edge of the Amsterdamse Waterleidingduinen nature reserve with large playground
https://pannenkoekendeoase.nl/
Onder de Platanen / Boerderij Zorgvrij ☑
Velsen-Zuid 📍
Lunch spot with large playground and farm open to public
https://www.onderdeplatanen.nl/
Venneper Lodge
Nieuw Vennep 📍
Restaurant (lunch/dinner) with indoor and outdoor play options and movie theater outside the city
https://venneperlodge.nl/