Use fresh orange juice and zest instead of lemon for a different flavor profile.
Preheat oven to 350°. Prepare Crust: Beat first 4 ingredients at medium speed with an electric mixer until smooth. Add 1 cup flour, beating at low speed until well blended. Press mixture on bottom of an 8-inch square pan coated with cooking spray.
Bake at 350° for 20 minutes.
Meanwhile, prepare Filling: Process cottage cheese in a food processor 1 minute or until smooth, stopping to scrape down sides as needed. Add granular sweetener and next 6 ingredients, and process 30 seconds or until well blended. Pour filling over prepared crust.
Bake at 350° for 25 minutes or until set. (Edges will be lightly browned.) Cool 30 minutes. Cover and chill 8 hours. Cut into bars. Garnish, if desired.
Note: We tested with Whey Low 100% All Natural Gold Brown Sugar Sweetener and Granular Sweetener.