Less than two months since first launching Target Restock in the Minneapolis area, Target is now expanding the test that aims to keep customers from fleeing to Amazon.

For starters, the next-day delivery service of household essentials is now open to any customers, not just Redcard holders as was initially the case when the pilot program first rolled out. Second, Target has expanded it to include items such as school supplies and baby food. Third, it's now making Saturday deliveries.

And, finally, Target is expanding the program to the Dallas-Forth Worth and Denver areas.

Target Restock is the retailer's answer to Amazon Prime Pantry.

For a $5 fee, orders placed online by 2 p.m. will be delivered the next day (a faster delivery pace than normal online orders) on a box up to 45 pounds. Customers can select from more than 15,000 items that include everything from laundry detergent to paper towels to cereal and potato chips to fill the box.