Cream butter and sugar. Add applesauce and egg and mix well. Blend in vanilla, buttermilk, lemon juice, lemon zest and food coloring. Mix well.
Combine dry ingredients and add slowly to mixture, stirring well. Pour batter into pans that have been sprayed with olive oil spray or similar non-stick baking spray. Spread batter to a depth of only ½ or ¾ inch thick. Bake in 350 degree oven for approximately 15 minutes.
Let cool and then cut into small squares. Set on a plate while preparing topping.
Organize selected toppings and put in individual small bowls. We used chocolate sprinkles, crumbled Reese’s peanut butter cups and hot chocolate powder. You could also choose, crushed graham crackers, oreo cookies, coconut or toffee bits.
Melt chocolate in microwave. Using a small spreader or knife, spread chocolate on sides of a cake square, then sprinkle with topping. Set square on plate, spread chocolate on top and sprinkle with topping. Repeat for each cake bite. Let set for about an hour until chocolate if firm before serving.