# Ingredient List:
→ Cake
01 - 1 box (15.25 oz) white cake mix
02 - 1 cup water
03 - 1/2 cup vegetable oil
04 - 3 large eggs
→ Gelatin
05 - 1 package (3 oz) strawberry or cherry-flavored gelatin
06 - 1 package (3 oz) berry blue gelatin
07 - 2 cups boiling water, divided
08 - 2 cups cold water, divided
→ Topping
09 - 1 tub (8 oz) frozen whipped topping, thawed
10 - 2 tablespoons red, white, and blue sprinkles or nonpareils
11 - Fresh strawberries and blueberries for garnish (optional)
# How-To Steps:
01 - Preheat oven to 350°F and grease a 9x13-inch baking dish.
02 - Prepare the white cake mix according to package directions using 1 cup water, 1/2 cup vegetable oil, and 3 large eggs; mix until smooth.
03 - Pour batter into the prepared baking dish and bake for 28–32 minutes or until a toothpick inserted in the center comes out clean; remove from oven and let rest 15 minutes.
04 - Using the handle of a wooden spoon, poke holes across the top of the warm cake approximately 1 inch apart, reaching near the bottom but not through the pan.
05 - In two separate bowls, dissolve each 3 oz gelatin package: add 1 cup boiling water to one packet, stir until dissolved, then stir in 1/2 cup cold water; repeat with the other flavor.
06 - Carefully pour the red gelatin into half of the holes and the blue gelatin into the remaining holes, allowing liquid to sink into the cake; refrigerate at least 2 hours until set.
07 - Spread the thawed whipped topping evenly over the chilled cake, then scatter sprinkles and arrange fresh strawberries and blueberries if desired.
08 - Slice the cake into 12 equal portions and serve chilled.