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MasterChef Australia: 18x48
Mystery Box Challenge: Marion Grasby
To mark the start of Heat Week, food and media mogul Marion Grasby returns to MasterChef for the first time in 16 years with a spicy mystery box challenge.
18 - 1Auditions: Group 1 Apr. 19, 2026- 18 - 2Auditions: Group 2 Apr. 20, 2026
- 18 - 3Auditions: Second Chance Apr. 21, 2026
- 18 - 4Mystery Box: Jimmy Barnes Apr. 26, 2026
- 18 - 5Episode 5 Apr. 27, 2026
- 18 - 6Invention Test: Cereal Apr. 28, 2026
- 18 - 7Pressure Test: Maggie Beer Apr. 29, 2026
- 18 - 8Immunity Challenge: Andy Cooks May. 03, 2026
- 18 - 9Elimination Challenge: Reinventing Carbs May. 04, 2026
- 18 - 10Team Challenge May. 05, 2026
- 18 - 11Elimination Challenge: Family Traditions May. 06, 2026
- 18 - 12Mystery Box Challenge: Catherine Zhang May. 10, 2026
- 18 - 13Elimination Challenge: Viral Ingredients May. 11, 2026
- 18 - 14Team Service Challenge: Viral-worthy Dish May. 12, 2026
- 18 - 15Immunity Pin Challenge: Khanh Ong May. 13, 2026
- 18 - 16Mystery Box Challenge: Rick Stein May. 17, 2026
- 18 - 17Elimination Challenge: Cuisines from Around the World May. 18, 2026
- 18 - 18Invention Test: Fusion May. 19, 2026
- 18 - 19Pressure Test: Rosheen Kaul May. 20, 2026
- 18 - 20Mystery Box Challenge: Dim Sim Lim May. 24, 2026
- 18 - 21Elimination Challenge: Heritage May. 25, 2026
- 18 - 22Team Challenge: Team Relay May. 26, 2026
- 18 - 23Immunity Pin Challenge: French Techniques May. 27, 2026
- 18 - 24Mystery box Challenge: Matt Sinclair & Daniel Dobra May. 31, 2026
- 18 - 25Classic Pairs Elimination Challenge Jun. 01, 2026
- 18 - 26Invention Test: Reese's Peanut Butter Cup Jun. 02, 2026
- 18 - 27Elimination Challenge: Time or Ingredients? Jun. 03, 2026
- 18 - 28Mystery Box Challenge: Curtis Stone Jun. 07, 2026
- 18 - 29Episode 29 Jun. 08, 2026
- 18 - 30Episode 30 Jun. 09, 2026
- 18 - 31Elimination Challenge: Aussie Native Ingredients Jun. 10, 2026
18 - 32Mystery Box Challenge: Adriano Zumbo Jun. 14, 2026
18 - 33Elimination Challenge: Ice Cream Taste Test Jun. 15, 2026
18 - 34Invention Test: Air Fryer Jun. 16, 2026
18 - 35Immunity Pin Challenge: Beat the Chef Jun. 17, 2026
18 - 36Skills Challenge: Fish Butchery Jun. 21, 2026
18 - 37Elimination Challenge: Flat Iron Steak Jun. 22, 2026
18 - 38Immunity Challenge: Tom Sarafian Jun. 23, 2026
18 - 39Pressure Test: Kirsten Tibballs Jun. 24, 2026
18 - 40Twins Challenge Jun. 28, 2026
18 - 41Mystery Box Challenge: The Judge's Fridge Jun. 29, 2026
18 - 42Team Challenge: Fine Dining Jun. 30, 2026
18 - 43Elimination Challenge: Ingredient Choice Jul. 01, 2026
18 - 44Mystery Box Challenge: Sanjeev Kapoor Jul. 05, 2026
18 - 45Elimination Challenge: International Ingredients Jul. 06, 2026
18 - 46Immunity Challenge: Ice Cream Flavours Jul. 07, 2026
18 - 47Pressure Test: Sam Aisbett Jul. 08, 2026
18 - 48Mystery Box Challenge: Marion Grasby Jul. 12, 2026
18 - 49Elimination Challenge: Hot New Chilli Dish Jul. 13, 2026
18 - 50Immunity Challenge: Hibachi Jul. 14, 2026
18 - 51Elimination Challenge: Head-to-Head Duels Jul. 15, 2026
18 - 52Mystery Box Challenge: One Ingredient Jul. 19, 2026
18 - 53Elimination Challenge: French Sauces Jul. 20, 2026
18 - 54Immunity Challenge: Keeping Up With Andy Jul. 21, 2026
18 - 55Pressure Test: Malaysian Snacks Jul. 22, 2026
18 - 56Immunity Challenge: Meghan Markle Jul. 26, 2026
18 - 57Elimination Challenge: Letters From Home Jul. 27, 2026
18 - 58Judges vs. Contestants Aug. 02, 2026
18 - 59Semi Final: Two-course Service Challenge Aug. 03, 2026
18 - 60Grand Finale Aug. 09, 2026