Whole Wheat Pancakes with Peanut Butter Sauce

Stir together milk, egg whites, brown sugar, olive oil, and vinegar in a medium bowl. Stir in whole wheat flour, baking powder, and salt until just combined. Pour about 2 Tbsp. batter for each pancake onto a hot, lightly greased griddle or large skillet. Cook pancakes over medium-high heat 3 minutes or until tops are covered with bubbles and edges look dry and cooked; turn and cook other side. Microwave peanut butter in a microwave-safe bowl 45 seconds; drizzle over pancakes, and serve immediately with sliced grapes and syrup.