Blend the cottage cheese: Add the cottage cheese, chili crisp, honey, lime juice, lime zest, olive oil, and kosher salt to a food processor or high-speed blender. Blend for 1–2 minutes until completely smooth and creamy, scraping down the sides as needed.
Prepare the watermelon: Use a small melon baller to scoop the watermelon into uniform balls, rotating the baller through the flesh to create rounded pieces. Measure out about 1 cup and refrigerate until ready to assemble.
Adjust the flavor: Taste the whipped cottage cheese and add another squeeze of lime, drizzle of honey, or spoonful of chili crisp until the balance of sweet, spicy, and tangy is just right.
Assemble the dip: Spread the whipped cottage cheese onto a shallow serving plate or bowl, creating swoops with the back of a spoon.
Add the toppings: Scatter the chilled watermelon balls over the cottage cheese, then drizzle with additional chili crisp. Finish with the fresh mint, toasted sesame seeds, flaky sea salt, and a little extra lime zest.
Serve: Enjoy immediately with toasted sourdough, crackers, or use it as a vibrant spread for summer toast.