Best Cucumber Salad Recipe - How To Make Cucumber Salad

Ingredients

• 1 small red onion, halved lengthwise, thinly sliced
• 2 lb. Persian or English cucumbers, cut into 1/4"-thick rounds
• 2 1/4 tsp. (or more) kosher salt, divided
• 2 tbsp. extra-virgin olive oil
• 1 tbsp. apple cider vinegar
• 1 tbsp. fresh lemon juice
• 1 tbsp. whole-grain mustard
• 1 tsp. honey
• 1/4 tsp. black pepper
• 1/4 tsp. crushed red pepper flakes (optional)
• 1/3 c. chopped fresh dill
• 1/4 c. thinly sliced chives