Add ½ cup cold water to cornstarch and stir until cornstarch is dissolved. Add cornstarch to boiling raspberry mixture to thicken, stirring continually.
Remove thickened raspberry mixture from heat and stir in lemon juice.
Return raspberry topping to medium heat for 1 minute while continuing to stir, remove homemade raspberry topping from heat.
Add dry ingredients to milk mixture and stir together gently - do not over mix.
Pour ½ cup - ¾ cup waffle batter into greased waffle iron, cook.
Top waffle with butter, Grandma's Homemade Raspberry Topping, sliced bananas and whipped cream. ENJOY!