Greek Tortellini Salad with avocados and cucumbers

INGREDIENTS

1/2 cup

olive oil

1/4 cup

balsamic vinegar (or 2 tablespoons each balsamic and red wine vinegar)

1/4 tsp

ground black pepper (or more, to taste)

1/4 tsp

salt (or more, to taste)

1/2 tsp

white sugar

1 tbsp

Greek yogurt (optional)

large cucumbers, sliced thinly

avocados, peeled, cored, and cubed

package tortellini (7 oz)

1 cup

feta cheese