**Prepare the Tray:**
- Line a baking dish or tray with parchment paper. Set aside.
**Cook the Base:**
- In a medium saucepan over medium heat, combine sugar, evaporated milk, and butter. Stir continuously until the mixture comes to a boil. Cook for 2-3 minutes while stirring to ensure it doesn’t scorch.
**Add Flavor:**
- Remove the saucepan from heat and stir in vanilla extract.
**Combine the Mix-Ins:**
- In a large mixing bowl, combine chopped dates, nuts, and crispy rice cereal. Pour the hot sugar mixture over the dry ingredients and mix until evenly coated.
**Shape the Candy:**
- Spoon the mixture into the prepared baking dish and press it down firmly with a spatula. Alternatively, drop spoonfuls onto the tray to form individual candies.
**Set the Candy:**
- Let the candy cool at room temperature until firm, about 1 hour. Cut into squares or break into pieces if made in a baking dish.
**Serve:**
- Enjoy immediately or store for later!