01 -
Preheat the oven to 350°F (175°C). Grease two 8x4-inch loaf pans well with baking spray or softened butter.
02 -
In a large bowl, beat the softened cream cheese and eggs with a hand mixer until mostly combined. Small cream cheese bits are fine.
03 -
Add the dry cake mix and vegetable oil. Mix on low speed for 30 seconds, scrape the bowl, then beat on medium for about 2 minutes until thick and smooth.
04 -
Fold in 1/3 cup jimmies by hand with a spatula. Mix only until evenly scattered so the colors do not bleed.
05 -
Divide the batter between the pans and smooth the tops. Bake for 35-40 minutes, until a toothpick inserted in the center comes out clean or with a few moist crumbs.
06 -
Cool the loaves in the pans for 10 minutes. Turn them out onto a wire rack and let them cool fully before glazing.
07 -
Whisk powdered sugar, vanilla, 4 tablespoons cream, and salt until smooth. Add more cream a little at a time if needed. Drizzle over the cooled loaves and top with sprinkles.