The spiciness level of curry pastes can vary. I tend to buy mine from Whole Foods. If you don’t like or have green curry paste, you can make this with red curry paste too. If you don’t like really spicy food, cut back on the paste or choose a more mild variety! If you find the recipe too spicy, it’s likely from the curry paste you used and I would suggest looking for brands that don’t contain “chilis” as one of the first ingredients!