









Rainbow Donuts
Opens Monday at 4:00 AM
Diamond Bar
🥐Try the Cronut
☕Grab a coffee and stay awhile
For twenty years, locals have been loading up boxes at this unassuming strip-mall spot. The new owners keep the fryers busy turning out everything from Old-Fashioneds to flaky Cronuts, served with genuine neighborhood warmth.
Hidden local gem
Family-owned shop
Gourmet-style donuts
Fresh daily batches










Rainbow Donuts
Opens Monday at 4:00 AM
Diamond Bar
🥐Try the Cronut
☕Grab a coffee and stay awhile
For twenty years, locals have been loading up boxes at this unassuming strip-mall spot. The new owners keep the fryers busy turning out everything from Old-Fashioneds to flaky Cronuts, served with genuine neighborhood warmth.
Hidden local gem
Family-owned shop
Gourmet-style donuts
Fresh daily batches