Three of my favorite summer fruits-cherries, blueberries and plums are so delicious, I did not add sugar to the fruit mixture. I simply cut enough fruit to fill my baking dish and sprinkled in a tiny bit of cornstarch. I did add a small amount of sugar to the oat topping, along with other tasty mix-ins:
2 Tbsp. Oats
2 Tbsp. Pecan Meal
2 Tbsp. Toasted unsweetened Coconut
2 Tbsp. Brown Sugar
2 Tbsp. Earth Balance Buttery Spread
Sprinkle over fruit mixture. Bake at 375 degrees for 50 minutes.