In a large bowl, add cake mix, lemon juice, water, melted butter, eggs, and lemon zest, mix with a spoon until combined. Don't over mix, some lumps are fine.
Spray slow cooker with non-stick cooking spray
Pour batter in slow cooker, and smooth the batter down evenly
Cook on high for 2 hours. The cake should be firm in the middle. If not yet set, continue cooking for 30 minutes more.
Mix Glaze ingredients in a small bowl with a whisk.
Pour over lemon cake
Scoop into bowls, and serve with vanilla ice cream
Video
Notes
Nutritional values are approximate. If you require a special diet, please use your own calculations. The values below are for 1/8 of the recipe and do not include ice-cream.