1. Preparing for Baking
Ensure all wet ingredients (dairy-free milk, oil, eggs, or egg substitutes) are at room temperature. This helps blend the ingredients evenly, creating a smoother batter.

2. Getting the Pan Ready
Preheat the oven to 350°F (175°C). Grease a 9×13-inch pan thoroughly using baking spray, oil, or baking paper to prevent sticking.

3. Mixing the Ingredients
In a large mixing bowl, combine dairy-free cake mix, milk, oil, eggs, and vanilla extract. Stir gently at first to avoid splattering.

4. Mixing the Batter
Use an electric mixer on low speed for a few seconds, then increase to medium speed for 2 minutes. Scrape down the bowl’s sides while mixing. If using a whisk, mix until just combined to avoid a dense cake.

5. Pouring the Batter
Pour the batter into the prepared baking pan and smooth the top with a spatula to ensure even baking.

6. Baking the Cake
Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean. The cake should have golden edges and a set center.

7. Cooling the Cake
Remove from the oven and let cool in the pan for 10 minutes. Transfer to a wire rack to cool completely before frosting.

8. Adding Frosting
Once the cake is completely cool, either enjoy it as-is or frost it with your favorite dairy-free frosting. Many dairy-free frosting recipes are available to match your preference.