These rainbow cake in a jar is not as complicated as you think. Just bake 5 types of cakes in different colors using any pan or molder and cut it using a paper patterned from the jar. Slice it according to pattern and do the cake layering inside the bottle.
But how about the scrap cake? No scraps at all, because you can still use the cake scraps into 1 jar another jar.
These cakes can also be cooked in a steamer. So even if you don’t have an oven, you can use a steamer to bake these cakes.
Just be very careful with the steamer and make sure to cover your cake pan with foil so the water doesn’t drip in the cake. Steaming time will depend on the size of your pan (about 30 minutes). Do a toothpick test always!
Rainbow Cake in a Jar
1 box white cake mix (any cake mix)
1 pack Whipped It or Frosty Boy Whipping Powder. (Follow package instructions)
3 egg whites (for cake mix)
1/3 cup vegetable oil (for cake mix)
neon gel food colors, food color (which has the attributes yellow, green, red, & blue)
4 square pan molder
3 wide-mouth glass canning jars (1-pint)
Preheat oven to 170°C (or 350°F). Wash canning jars and dry thoroughly. Set lids and rims aside.
Make cake batter according to directions on cake mix box.
Divide batter evenly between 3 bowls (approximately 1 cup of batter in each bowl).
Add 5 drops of red food coloring to the 1st bowl. Stir to blend well.
Add 5 drops of regular yellow food coloring to the 2nd bowl. Stir to blend well.
Add 5 drops of regular green food coloring to the 3rd bowl. Stir to blend well.
Add 7 drops of neon blue food coloring to the 4th bowl. Stir to blend well.
Spoon about 1/4-cup of each color batter into your molder pan.
Bake at for 15-20 minutes. Cake tops should spring back to the touch when done.
Allow cakes to cool completely, about one hour. Cut each cake individually in round sizes (make a paper patterned to your bottle). Do not discard cake scraps, use it for the last bottle.
Arrange the bottles and start cake layering. Spread frosting for every layer for every bottle. Frost the final layer and leave an extra allowance from the top. Cover the bottles. Ready to serve!
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