The series begins with back-to-back challenges: flower-inspired cupcakes and upside-down cakes using fresh fruit.

The seven remaining bakers take sweet and tart to a whole new level. In the first challenge, they must create a honey dessert, while for their main heat challenge, they have to pucker up to lemons and limes and bake a citrus treat.

The bakers take on a special treat, transforming coffee and cream into a delectable dessert; whipping up a festive mom-worthy brunch.

The five bakers left in the Spring Baking Championship are challenged to bake for a birthday bash. They kick it off with desserts on a stick followed by an amazing birthday cake paired with homemade ice cream.

The final four bakers must tap into their basic training to create memorable Memorial Day desserts to make it to the finale. They'll have the freedom to create the dessert of their choosing as long as it's red, white and blue.

In the epic finale, one of the three remaining bakers must create a wedding cake that truly deserves to be the centrepiece of the big day, in order to become the Spring Baking Champion and take home $50,000.

Spring means it's time to get fruity, so for the preheat challenge, eight of America's best bakers undertake a shortcake makeover using any fruit but berries. To stay in the competition, the bakers will have to create berry naked cakes.

The remaining bakers take on outdoor activities with a pre-heat ballpark snack dessert made from classic ballpark treats like popcorn and soft pretzels; the bakers attempt to create barbecue imposter desserts.

In the pre-heat, the six remaining bakers must make yummy dippers and create a sweet fondue; for the main heat, bakers must produce glorious rainbow desserts to stay in the game.

The five remaining bakers are tasked with transforming farm-fresh vegetables into delectable desserts; in the main-heat, the bakers pay homage to a traditional farmhouse breakfast with bacon and egg-themed confections.

In the pre-heat, the four remaining bakers take inspiration from typical Mother's Day gifts for their stunning desserts. Then the bakers take on chocolate, the most appreciated Mother's Day gift of all.

The three remaining bakers create an array of snacks for the welcome baskets for a destination wedding; in the final main-heat, they must bake a wedding cake inspired by popular wedding destinations Mexico, Hawaii, and Italy.

Nine of the best bakers in America embrace the spirit of the Spring Baking season by creating Easter egg desserts and bunny cakes.

For the eight remaining bakers, spring vacations inspire tropical desserts and destination doughnuts based on locations such as a poolside resort, a spring cruise and a Vegas getaway.

Big colorful hats, stunning racehorses, roses and bourbon! The seven remaining bakers celebrate the Kentucky Derby with their takes on mint julep desserts and cookie garlands.

When the weather gets nice, it’s time for some remodeling. Included: The six remaining bakers attempt to lighten up a dense, dark brownie and give a classic Napoleon a springtime twist.

It’s baking to celebrate mom! To kick off, the five remaining bakers create fruit tarts from the heart in a kaleidoscope of colors and flavors. Next, they give vintage dessert makeovers to “mom classics” like peach cobbler, bread pudding, chocolate cream pie and pineapple upside-down cake.

Spring showers are in the forecast! Since rain makes gardens grow, the four remaining bakers must make whoopie pie critters you’d find in a garden. Next, to capture the drips and drops of rainfall, the bakers create colorful drip cakes while eyeing a spot in the finale

The three finalists finish up with a bang in the Season 3 finale. First, it is a sweet and savory patriotic picnic followed by a salute to the red, white and blue with American flag cakes. When the flour dust settles, one lucky baker will be celebrating a $50,000 victory.

The competition kicks off in the pre-heat, when the 10 bakers celebrate the bountiful fruits and bright colors of the season by making fruity, tie-dye mini cheesecakes. In the main heat, the theme -- and the competition -- intensifies when the bakers are asked to incorporate fresh herbs and produce color gradients in their naked ombre cakes.

The nine bakers create cupcake flower arrangements and amp up the flower power with flower essences; in the main heat, the competitors are challenged to make and decorate mirror-glazed gazing balls and plate them in edible gardens.

The eight bakers work in teams to create springtime mini pies perfect for an outdoor gathering; the competitors make desserts using three items from a picnic basket, but are not allowed to make the same thing as their picnic partners.

The seven bakers take on springtime eclairs in the pre-heat challenge; host Ali Khan asks the bakers to create edible spring goodie baskets filled with two types of baked treats, one of which must use a hard-boiled egg.

The six bakers have to create berry tiny desserts that pack a big punch; the main heat features an explosion of color and design as the bakers take on spring-patterned roll cakes.

The five bakers must use only agave as the sweetener in an assigned dessert: a tart, a flourless cake, an ice cream sandwich, a doughnut or a cupcake; for the main heat, the bakers make succulent cakes that rival the real thing.

In the pre-heat, the four bakers must pair avocado with chocolate, lime, orange or ginger in a dessert; in the main heat, the bakers add a spring feel to a winter dessert such as pumpkin pie, pecan pie, bread pudding or peppermint bark.

The three remaining bakers must use ugly ingredients to make the most beautiful dessert in the pre-heat; the main heat is all about hidden beauty; the bakers must prepare vibrant and colorful geode cakes using handmade rock candy to win.

Ten bakers celebrate spring by combining all things cute and delicious in their spring animal-themed doughnuts in round one; in the main heat, the bakers create watercolor cakes featuring iconic spring fruits and vegetables.

The remaining nine bakers compete to make blue-ribbon worthy rhubarb pies with decorative crusts; the competition gets wild and wacky in the main heat when the bakers have to make larger-than-life versions of favorite fairground treats.

In the spirit of spring romance, the eight bakers are paired up in teams to create harmonious mashups of two different desserts.

The seven bakers put a spring spin on Southern classics, starting with the challenge of turning a can of biscuits into a spring dessert flavored with lemonade, bourbon or sweet tea.

Easter is a time for colorful desserts and marshmallow treats, so the six remaining bakers have to create an ooey-gooey marshmallow dessert in a bright Easter color.

For Earth Day, the five bakers are celebrating the bounty of Mother Nature, starting with wondrous walnut desserts featuring an assortment of flower honeys. Then the competitors find themselves in a forest grove filled with wild berries, which they must use to flavor an enchanted forest cake with edible moss.

Pink is the color of spring, and rose is the perfect party wine, so the four remaining bakers are charged with making mini desserts featuring rose and cheese. Then it's off to the races in the spirit of the Kentucky Derby as the bakers make all-pink party desserts using pink ingredients.

Remaining bakers celebrate Mother's Day; competitors make baked items inspired by mai tais, mojitos or mimosas; they then use flavors inspired by Mom's favorite coffee drinks to create cakes featuring their Mother's Day gifts; the winner is chosen.

Eleven bakers celebrate the natural beauty of spring by making perfectly patterned spring fruit geometric tarts. Then they show off their skills by making trendy fault line cakes that feature spring transformations such as caterpillar to butterfly, rain showers into sunshine and bare trees bursting into bloom.

The ten competing bakers celebrate the spring equinox by first making colorful and delicious doughnuts themed to either sunrise or sunset. Then the theme is stargazing at night, and each baker is assigned a celestial event to bring to life in dessert form. There are shooting stars, the Milky Way, the Northern Lights, meteor showers and more.

It's raining cats and dogs as the nine competing bakers make "kittyclairs" -- eclairs with an orange kitty theme. Then they play puppy games, making desserts with sporty themes like a kayaking poodle and a tennis-loving Labrador.

It's team challenge week, and the eight bakers grab a buddy to spring into the outdoors. First, they bake tasty hand-held treats for a hike. Then it's time for a bike ride as each baker must make a Paris-Brest wheel and work with their teammate to create a complete two-wheeled dessert, decorated for a ride through a vineyard, canyon, city park or country lane.

In celebration of the upcoming movie, the seven remaining bakers join the Trolls World Tour and are challenged to make colorful tiny Troll treats. Then the competitors have VIP all-access passes to a Troll rock concert and must create cakes with a musical Troll tribe theme.

Spring is the time to clean and streamline, so the six remaining competitors make minimalist creations that are both flourless and flower-less. Then the bakers choose a crafted item from a funky yard sale and use it as inspiration for a gorgeous dessert

It's all things spring and flower-centric when the five remaining bakers are assigned cherries, cherry blossom decor and a crumble dessert to combine into a fabulous floral fusion. Then the competitors work with an ever-popular trend to create flower-crown cakes.

It's Mother's Day, and Mom takes a spring vacation to celebrate. Inspired by Mom's favorite cocktail, the four remaining bakers create sweet, spicy margarita madness desserts. Then the competitors make look-alike baked goods based on Mom's pool float, choosing between flamingo, swan, seahorse or peacock.

The pressure mounts in the Spring Baking Championship finale as the three remaining bakers celebrate graduation day by making an honor roll dessert and a diploma dessert with a dipping sauce. Then the competitors create prom-night cakes themed to the '50s, '60s or '80s. One baker wins the title of Spring Baking Champion and the $25,000 prize.