GFCF Classic Banana Cream Pie

One 9" GFCF Graham Cracker Pie Crust, baked3 tbsp. cornstarch1 1/3 cups water1 recipe Mock Sweetened Condensed Milk or Sweetened Condensed Coconut Milk3 beaten egg yolks1 1/2 tsp. vanilla2 medium ripe bananaslemon juiceIn a small saucepan, dissolve the cornstarch in the water. Stir in the mock milk and egg yolks. Cook and stir until thickened and bubbly. Remove from heat. Add vanilla and stir